WO2017022645A1 - Communications system, communications device, communications method, and program - Google Patents

Communications system, communications device, communications method, and program Download PDF

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Publication number
WO2017022645A1
WO2017022645A1 PCT/JP2016/072235 JP2016072235W WO2017022645A1 WO 2017022645 A1 WO2017022645 A1 WO 2017022645A1 JP 2016072235 W JP2016072235 W JP 2016072235W WO 2017022645 A1 WO2017022645 A1 WO 2017022645A1
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Prior art keywords
triggering message
triggering
probability
received
reception
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PCT/JP2016/072235
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French (fr)
Japanese (ja)
Inventor
山田　徹
恭二 平田
晃 亀井
芹沢　昌宏
穂高 菅野
長谷川　聡
政志 下間
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日本電気株式会社
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Publication of WO2017022645A1 publication Critical patent/WO2017022645A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/10—Flow control between communication endpoints
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/18—Service support devices; Network management devices

Definitions

  • the present invention relates to a communication system, a communication device, a communication method, and a program.
  • the cellular communication function is widely used not only for voice calls and data communication such as mobile phones and smartphones, but also for machine type communication devices (also called MTC devices).
  • MTC devices also called machine type communication devices.
  • the number of including communication terminals hereinafter referred to as UE (User Equipment) or communication terminals) is increasing.
  • MTC machine type communication
  • 3GPP® is examining the triggering method for MTC devices, and 3GPP® 23.888 proposes multiple methods.
  • One method is to use Short Message Service (SMS).
  • SMS Short Message Service
  • 3GPP TS 23.682 defines the architecture of machine type communication (MTC) as shown in Fig.9.
  • an external application server (AS) triggers a UE (MTC device) via a network node such as an MTC server (SCS: Service Capability Server) or MTC-IWF (MTC-Interworking Function).
  • MTC-IWF MTC-Interworking Function
  • the MTC device may be a computing device such as a mobile phone, a sensor, or an actuator.
  • Tsp, T4, T5a, b, and c interfaces are defined as “control plane” interfaces, and the MTC server communicates with MTC-IWF via the Tsp interface.
  • the control plane is generally a signaling communication path that carries traffic on the network and is also known as the data plane, forwarding plane, carrier plane, or bearer plane.
  • the MTC device normally communicates with the MTC server via the “user plane” of the network.
  • the user plane is a communication path that transmits user traffic such as voice communication and data communication (for example, e-mail and Internet web information).
  • voice communication and data communication for example, e-mail and Internet web information.
  • control plane messages in cellular communication include paging messages, short message service messages, location area update messages, detach messages, and attach messages.
  • Device triggering is a message initiated by a network entity such as an application server (AS) and sent to the device, usually via the network control plane. Since device triggering is transmitted on the control plane, an IP address is not required, but an external identifier (External Identifier) such as a mobile station international subscriber directory number (MSISDN) or uniform resource identifier (URI) is used. I need.
  • AS application server
  • MSISDN mobile station international subscriber directory number
  • URI uniform resource identifier
  • the external application server sends a triggering request message to the MTC-server, and the MTC server that receives this sends a triggering request to the MTC-IWF via the Tsp interface.
  • the MTC-IWF authenticates the transmission MTC server from the contents of the triggering request message in cooperation with the HSS. If authenticated, mapping between the external identifier or MSISDN number of the MTC device and an internal identifier such as the International Mobile Subscriber Identifier (IMSI), via a control plane interface such as T4 and T5a, b, c Trigger the MTC device.
  • the MTC-IWF performs an operation of reporting the success or failure of the trigger distribution to the MTC server based on the result received through the T4, T5a, b, and c interfaces.
  • SMS-SC Short-Message-Service-Service-Centre
  • SMS-SC sends a triggering request including the above triggering information to the MME / SGSN / MSC based on the IMSI, and the MTC via the base station from the MME / SGSN / MSC.
  • a triggering message is sent to the device. If the triggering message is acceptable, the MTC device that has received the triggering message sends a network connection request signal to the MME / SGSN / MSC as a response, and the MTC-SMS message is sent from the MME / SGSN / MSC via the SMS-SC.
  • the IWF and MTC server are reached, and a communication connection is established between the MTC device and the MTC server.
  • the MTC device is always placed in the active mode, which increases battery consumption, significantly shortens the operation guarantee period of the MTC device, and more extreme cases. Then, there is a case where the operation is stopped.
  • Non-Patent Document 2 describes that the triggering procedure is stopped when the number or rate of triggering for each MTC device exceeds a threshold in MTC-IWF.
  • Non-Patent Document 2 it is necessary to measure the triggering for a predetermined time and store the measured values for each MTC device, and the processing amount increases as the number of devices increases. Further, in the method of discarding the triggering message when the threshold value is exceeded, the message discarding process near the threshold value may become unstable.
  • the present invention has been invented in view of the above problems, and the object of the present invention is a communication system capable of performing network stabilization and safe triggering to a communication terminal such as an MTC device, A communication apparatus, a communication method, and a program are provided.
  • One aspect of the present invention is a wireless communication system that triggers a terminal using a triggering message, a reception history memory that holds a reception history of a triggering message, and the received triggering based on the reception history
  • the communication system includes a triggering message processing unit that calculates a probability of processing a message and processes a part of the received triggering message based on the probability.
  • One aspect of the present invention is a communication device that receives a triggering message for triggering a terminal and transmits the message to the terminal, and includes a reception history memory that holds a reception history of the triggering message, and the reception history And a triggering message processing unit that calculates a probability of processing the received triggering message and processes the triggering message based on the probability.
  • One aspect of the present invention is a wireless communication method for triggering a terminal using a triggering message, wherein a reception history of the triggering message is retained, and the received triggering message is processed based on the reception history.
  • a communication method for calculating a probability and processing a triggering message based on the probability is a wireless communication method for triggering a terminal using a triggering message, wherein a reception history of the triggering message is retained, and the received triggering message is processed based on the reception history.
  • One aspect of the present invention is a program for receiving a triggering message for triggering a terminal and transmitting the triggering message to the terminal, the received based on a reception history of a triggering message held in a reception history memory.
  • the present invention it is possible to perform network stabilization and safe triggering to a communication terminal such as an MTC device.
  • FIG. 1 is a block diagram of an embodiment of the present invention.
  • FIG. 2 is a diagram showing a configuration example of the embodiment of the present invention.
  • FIG. 3 is a block diagram of the MTC-IWF 10 in this embodiment.
  • FIG. 4 is a diagram for explaining the embodiment.
  • FIG. 5 is a diagram for explaining the embodiment.
  • FIG. 6 is a flowchart showing the operation of the embodiment.
  • FIG. 7 is a flowchart showing the operation of another embodiment.
  • FIG. 8 is a block diagram showing another example of the MTC-IWF 10 in the present embodiment.
  • FIG. 9 is a diagram for explaining the related art of the present invention.
  • FIG. 1 is a block diagram of an embodiment of the present invention.
  • An embodiment of the present invention is a wireless communication system that triggers a terminal by a triggering message, the reception history memory 1 holding a reception history of the triggering message, and the reception based on the reception history
  • the communication system includes a triggering message processing unit 2 that calculates a probability of processing a triggering message and processes a part of the received triggering message based on the probability.
  • the network system according to the first embodiment is LTE / SAE / EPS (Long Term Evolution / System Architecture Evolution / Evolved Packet System), UMTS, GPRS (General PacketGSMSG). Communication) (registered trademark) and the like.
  • LTE / SAE / EPS Long Term Evolution / System Architecture Evolution / Evolved Packet System
  • UMTS Universal Mobile Telecommunications
  • GPRS General PacketGSMSG. Communication
  • reception history memory 1 and the triggering message processing unit 2 are provided with, for example, an MTC server (SCS: Service Capability Server) or MTC-IWF (MTC-Interworking Function) on the network.
  • MTC server Service Capability Server
  • MTC-IWF MTC-Interworking Function
  • the reception history memory 1 receives a triggering message for starting a terminal such as an MTC device from an external application server (AS) or the like arranged on the network, and receives a reception history such as a reception time of the triggering message. It is to acquire and hold.
  • the triggering message includes an external identifier or MSISDN number (External Identifier or MSISDN), server identifier (SCS-Identifier), triggering reference number (Trigger reference number), validity period (Validity period), priority (Priority), application Port number (Application Port Identifier), triggering payload (Trigger payload), etc. are included.
  • the triggering message processing unit 2 calculates a probability of processing the received triggering message based on the reception history held in the reception history memory 1, and determines one of the received triggering messages based on the calculated probability. Process parts. Here, the process of a part of the received triggering message is at least a part of the process, and all the received triggering messages may be processed by the method described below. The processing is, for example, transfer or discard of the received triggering message, and further includes a case where the received triggering message is stored in a memory or other storage location of the apparatus without being transferred.
  • the triggering message processing unit 2 processes the received triggering message (transfer or discard (including the case where it is stored in the memory of the present apparatus or other storage location without being transferred to the transfer destination)) (Hereinafter, transfer probability) is calculated, and the triggering message is processed based on the transfer probability. For example, the transfer probability is calculated so that the shorter the triggering message reception interval, the higher the probability of discarding (not transferring) the triggering message. This is because the terminal must respond to a triggering message with a short reception interval, which causes an increase in battery consumption and a significant reduction in the operation guarantee period of the MTC device. This is because the triggering message is highly likely to be an illegal triggering message and further likely to be a factor that hinders network stabilization.
  • the triggering message processing unit 2 forwards the received triggering message as usual when the reception interval of the triggering message is longer (longer) than a predetermined value (time). If the value (time) is below (short), the triggering message may be transferred or discarded based on the transfer probability.
  • the transfer probability includes the above-mentioned external identifier or MSISDN number (External Identifier or MSISDN), server identifier (SCS-Identifier), triggering reference number (Trigger reference number), validity period (Validity period), priority (Priority) Information such as application port number (Application Port Identifier) may be taken into account. For example, for a triggering message with a high priority (Priority), the transfer probability may be adjusted so that the probability that the message will be transferred increases even if the trigger message reception interval is short.
  • the triggering message processing unit 2 performs a process of transferring the received triggering message based on the calculated transfer probability. For example, when the transfer probability of the received triggering message is 1/2, the triggering message is transferred to the next transfer destination with a probability of 1/2 by a method such as a random number, or with a probability of 1/2. Discard the triggering message (including the case where it is stored in the memory of this device or other storage location without being transferred to the transfer destination).
  • the triggering message transfer process is not performed by a deterministic method such as related technology, but the triggering message is transferred or discarded with probability.
  • a deterministic method such as related technology
  • the triggering message is transferred or discarded with probability.
  • an LTE M2M core network is taken as an example, the network node is assumed to be MTC-IWF (Inter-Working Function), and the UE is assumed to be an MTC device, but the names of various entities conform to the specifications of each network. To do.
  • MTC-IWF Inter-Working Function
  • FIG. 2 is a diagram showing a configuration example of an embodiment of the present invention.
  • the network system includes an MTC-IWF 10.
  • the MTC-IWF 10 functions as a node that relays messages between the MTC device 20 and an SCS (Service Capability Server) 30.
  • the SCS 30 functions as an MTC server in the LTE M2M core network.
  • MTC-IWF10 will be used as a network node, but other nodes include HSS (Home Subscriber Server), MME (Mobility Management Entity), SGSN (Serving GPRS (General PacketRadioSport).
  • MSC Mobile Switching Center
  • MME, SGSN, and MSC are referred to as “MME / SGSN / MSC” and may be collectively referred to by reference numeral 40.
  • Communication between the MTC device 20 and the MTC-IWF 10 is performed via the MME / SGSN / MSC 40 and a RAN (Radio Access Network).
  • RAN Radio Access Network
  • the MTC-IWF 10 in this embodiment includes a reception history memory 11 and a triggering message processing unit 12 as shown in FIG.
  • the reception history memory 11 acquires or holds a reception history including the reception time of the triggering message from the SCS 30.
  • the triggering message is a control message (NAS (Network Access Stratum) message) or SMS (short message), CBS (Cell Broadcast Service), MBMS (Multimedia Broadcast and Multicast) sent by an entity in the cellular network to the MTC device 20. Service), and further, various types of messages such as data packets (IP packets) are transmitted, and any type may be used in the present invention.
  • NAS Network Access Stratum
  • SMS Short message
  • CBS Cell Broadcast Service
  • MBMS Multimedia Broadcast and Multicast
  • the triggering message includes an external identifier or MSISDN number (External Identifier or MSISDN), server identifier (SCS-Identifier), triggering reference number (Trigger reference number), validity period (Validity period), priority (Priority) ), Application port number (Application Port Identifier), triggering payload (Trigger payload), etc., but in this embodiment, for each external identifier or MSISDN number (External Identifier or MSISDN), the triggering message Acquire or record the reception history of the reception time.
  • the triggering message processing unit 12 calculates the transfer probability of the received triggering message based on the reception history from the reception history memory 11.
  • the difference ( ⁇ Ti) between the reception time of the previous triggering message and the current reception time is calculated in advance.
  • the triggering message transfer probability (Pt) is calculated according to the following linear function expression.
  • the triggering message transfer probability (Pt) is the difference ( ⁇ Ti) between the reception time of the previous triggering message and the current reception time, that is, the reference time (T) with a predetermined reception interval as shown in FIG. The shorter the time, the lower the probability of transferring the triggering message (the higher the probability of discarding the triggering message, or it is stored in its own memory or in another memory). If the reception interval ( ⁇ Ti) is larger than a predetermined reference time (T), the triggering message transfer probability (Pt) of the triggering message is 1, and the received triggering message is basically transferred. (Triggering messages are not discarded).
  • the received triggering message from the SCS 30 is transferred to the MME / SGSN / MSC 40, or the received triggering message from the SCS 30 is discarded.
  • a process of storing in its own memory or a memory in another location is performed.
  • FIG. 6 is a flowchart showing the operation of the embodiment.
  • the triggering message (i) is received from the SCS 30 (Step 100), and the reception history of the triggering message (i) is recorded (Step 101).
  • Step 102 the difference ( ⁇ Ti) between the reception time of the reception history of the triggering message (i-1) and the reception time of the triggering message (i) is calculated (Step 102).
  • the triggering message transfer probability (Pt) ⁇ Ti / T and the triggering message (i) is set to MME / Transfer to SGSN / MSC 40 for transfer (triggering message (i) not transferred is discarded or stored in its own memory or memory in another location) (Step 104).
  • Step 103 when the calculated difference ( ⁇ Ti) is larger than the predetermined reference time (T) (Step 103), the triggering message (i) is transferred to the MME / SGSN / MSC 40 for transfer regardless of the probability. (Step 105). Then, the next triggering message (i + 1) is received (Step 106).
  • the triggering message transfer process is a process of transferring or discarding the triggering message with probability (or storing it in its own memory or a memory in another location). Probably transfer messages or discard them (or store them in their own memory or other memory) to stabilize the network and secure triggering to communication terminals such as MTC devices in a simple way. It can be performed.
  • a predetermined reference time (T) message transmission or discarding (or storage in its own memory or another memory) is performed stochastically, so the reception interval is predetermined. If it is longer than the reference time (T), it is not different from the normal process, so that the determination process is not burdened.
  • the triggering message transfer probability decreases as the reception interval becomes shorter than a predetermined reference time, and the triggering message transfer probability decreases.
  • the transfer probability of the triggering message and the discard probability of discarding the triggering message are in a relationship of two sides.
  • the modification of the present embodiment is a modification of the processing of the triggering message processing unit 12 from the viewpoint of discarding the triggering message (or storing it in its own memory or a memory in another location).
  • the triggering message processing unit 12 performs a process of discarding the received triggering message (or storing it in its own memory or a memory in another location) based on the calculated discard probability (Pr). For example, the triggering message is discarded (or stored in its own memory or a memory in another location) with a random number of the discard probability (Pr) of the received triggering message.
  • FIG. 7 is a flowchart showing the operation of a modification of the embodiment.
  • the triggering message (i) is received from the SCS 30 (Step 200), and the reception history such as the reception time of the triggering message (i) is recorded (Step 201).
  • the reception time of the triggering message (i-1) and the triggering message discard probability (Pr) of the triggering message (i) are calculated (Step 202). Based on the calculated triggering message discard probability (Pr), for example, whether to generate a random number and discard the triggering message (i) (or store it in its own memory or memory elsewhere) (Step 203).
  • Step 203 When discarding the triggering message (i) (or storing it in its own memory or other memory), stop the triggering message (i) transfer process and discard the triggering message (i) (or , Stored in its own memory or memory in another location) (Step 204).
  • the triggering message (i) is transferred to the MME / SGSN / MSC 40 for transfer (Step 205). Then, the next triggering message (i + 1) is received (Step 206).
  • the contents of the triggering message external identifier or MSISDN number (External Identifier or MSISDN), server identifier (SCS-Identifier), triggering reference number (Trigger reference number), validity period (Validity period), priority (
  • the triggering message transfer probability or the triggering message discard probability may be calculated in consideration of information such as (Priority) and application port number (Application Port Identifier). For example, by applying the parameter Z (0 ⁇ Z ⁇ 1) that changes according to the priority (the closer the priority is to 0, the higher the priority is) to the above formula, the triggering message is as follows: A transfer probability (Pt) may be calculated.
  • the triggering message transfer probability or the triggering message discard probability is calculated in consideration of the priority according to the contents of the triggering message, and the triggering message transfer is individually controlled according to the priority.
  • triggering messages that are highly likely to be fraudulent are analyzed by not storing the triggering messages completely, but storing them in their own memory or other memory, and analyzing the source of the stored triggering messages.
  • the original identification can be made.
  • the MTC-IWF includes the reception history memory 11 and the triggering message processing unit 12
  • the MTC server (SCS: Service Capability Server)
  • the triggering message processing unit 12 may be provided to perform the same processing. In this case, the receiving destination and forwarding destination of the triggering message are different, but the other processes are the same.
  • each unit is configured by hardware, but may be configured by a program that causes an information processing apparatus (a processor such as a CPU) to perform the above-described operation processing.
  • a processor such as a CPU
  • functions and operations similar to those of the above-described embodiment are realized by a processor that operates according to a program stored in the program memory.
  • the MTC-IWF 10 can be realized by a computer system including a memory 100, a memory 101, and a CPU 102 as shown in FIG.
  • the reception history including the reception time of the triggering message from the SCS 30 is acquired or held in the memory 100.
  • the memory 101 stores a program for performing processing corresponding to the triggering message processing unit 12 described above.
  • the function of the triggering message processing unit 12 is realized by the CPU 102 executing the program stored in the memory 101.
  • a wireless communication system for triggering a terminal by a triggering message A reception history memory that holds the reception history of triggering messages;
  • a communication system comprising: a triggering message processing unit that calculates a probability of processing the received triggering message based on the reception history, and processes a part of the received triggering message based on the probability.
  • Appendix 4 The communication system according to any one of appendix 1 to appendix 3, wherein the triggering message processing unit discards the triggering message based on the probability when a reception interval of the triggering message is less than a predetermined value.
  • the triggering message processing unit has a ratio of a difference time between a reception time of the received triggering message and a reception time of the triggering message received immediately before the received triggering message, and a predetermined reference time.
  • the communication system according to any one of appendix 1 to appendix 4, wherein the triggering message is discarded with a probability based on a function.
  • the triggering message processing unit includes the terminal's external identifier or MSISDN number, server identifier, triggering reference number, validity period, priority, application port number included in the triggering message, and the probability.
  • the communication system according to any one of appendix 1 to appendix 6, which calculates
  • Appendix 8 The communication according to any one of appendix 1 to appendix 7, wherein an MTC server (SCS: Service Capability Server) or MTC-IWF (MTC-Interworking Function) includes the reception history memory and the triggering message processing unit. system.
  • SCS Service Capability Server
  • MTC-IWF MTC-Interworking Function
  • a communication device that receives a triggering message for triggering a terminal and transmits the message to the terminal, A reception history memory that holds the reception history of triggering messages;
  • a communication apparatus comprising: a triggering message processing unit that calculates a probability of processing the received triggering message based on the reception history and processes the triggering message based on the probability.
  • Appendix 10 The communication apparatus according to appendix 9, wherein the triggering message processing unit transfers or discards the received triggering message.
  • Appendix 12 The communication device according to any one of appendix 9 to appendix 11, wherein the triggering message processing unit discards the triggering message based on the probability when a reception interval of the triggering message is less than a predetermined value.
  • the triggering message processing unit has a ratio of a difference time between a reception time of the received triggering message and a reception time of the triggering message received immediately before the received triggering message, and a predetermined reference time. 13.
  • the communication device according to any one of appendix 9 to appendix 12, wherein the triggering message is discarded with a probability based on a function.
  • the triggering message processing unit includes the terminal's external identifier or MSISDN number, server identifier, triggering reference number, validity period, priority, application port number included in the triggering message, and the probability. 15. The communication device according to any one of appendix 9 to appendix 14, which calculates
  • Appendix 16 The communication apparatus according to any one of appendix 9 to appendix 15, wherein the communication apparatus is an MTC server (SCS: Service Capability Server) or an MTC-IWF (MTC-Interworking Function).
  • MTC server Service Capability Server
  • MTC-IWF MTC-Interworking Function
  • Appendix 18 The communication method according to appendix 18, wherein the process is transfer or discard of the received triggering message.
  • Appendix 20 The communication method according to any one of appendix 17 to appendix 19, wherein when the triggering message reception interval is less than a predetermined value, the triggering message is discarded based on the probability.
  • Triggering is performed with a probability based on a function of a ratio between a difference time between the reception time of the received triggering message and the reception time of the triggering message received immediately before the received triggering message and a predetermined reference time.
  • the communication method according to any one of appendix 17 to appendix 20, wherein the message is discarded.
  • MTC server SCS: Service Capability Server
  • MTC-IWF MTC-Interworking Function Holds the reception history of triggering messages, 24.
  • the communication method according to any one of appendix 17 to appendix 23, wherein a probability of processing the received triggering message is calculated based on the reception history, and the triggering message is processed based on the probability.
  • Appendix 25 A program for receiving a triggering message for triggering a terminal and transmitting the message to the terminal, Calculates the probability of processing the received triggering message based on the reception history of the triggering message held in the reception history memory, and communicates the triggering message processing for processing the triggering message based on the probability.
  • Appendix 27 The program according to appendix 25 or appendix 26, wherein the triggering message processing is calculated such that the probability of discarding the triggering message increases as the reception interval of the triggering message is shorter.
  • Appendix 28 28. The program according to any one of appendix 25 to appendix 27, wherein the triggering message processing discards the triggering message based on the probability when a reception interval of the triggering message is less than a predetermined value.
  • the triggering message processing is a function of a ratio of a difference time between a reception time of the received triggering message and a reception time of the triggering message received immediately before the received triggering message and a predetermined reference time. 29.
  • the program according to any one of appendix 25 to appendix 28, wherein the triggering message is discarded with a probability based on.
  • the triggering message processing is performed when the difference time between the reception time of the received triggering message and the reception time of the triggering message received immediately before the received triggering message is lower than a predetermined reference time, 29.
  • the program according to any one of supplementary notes 25 to 28, wherein a triggering message is transferred with a probability based on a function of a ratio between a difference time and the predetermined reference time.
  • the probability is calculated by taking into account any of an external identifier or MSISDN number of a terminal included in the triggering message, a server identifier, a triggering reference number, a validity period, a priority, and an application port number.
  • the program according to any one of Supplementary Note 25 to Supplementary Note 30 to be calculated.
  • Appendix 32 32.
  • MTC server Service Capability Server
  • MTC-IWF MTC-Interworking Function
  • Reception History Memory 2 Triggering Message Processing Unit 10 MTC-IWF 11 Reception History Memory 12 Triggering Message Processing Unit 20 MTC Device 30 SCS 40 MME / SGSN / MSC 100 memory 101 memory 102 CPU

Abstract

The present invention is a wireless communications system that triggers a terminal by using triggering messages and has: a reception history memory that holds a reception history for triggering messages; and a triggering message processing unit that calculates the probability of processing received triggering messages, on the basis of the reception history, and processes some of the received triggering messages, on the basis of the probability.

Description

通信システム、通信装置、通信方法及びプログラムCOMMUNICATION SYSTEM, COMMUNICATION DEVICE, COMMUNICATION METHOD, AND PROGRAM
　本発明は、通信システム、通信装置、通信方法及びプログラムに関する。 The present invention relates to a communication system, a communication device, a communication method, and a program.
　現在、例えば、セルラ通信機能は、携帯電話やスマートフォンなどの音声通話やデータ通信で利用されるだけでなく、マシンタイプ通信向けの機器（ＭＴＣデバイスとも呼ばれる）でも広く利用されており、ＭＴＣデバイスを含む通信端末（以下、ＵＥ（User Equipment）又は通信端末と記載する）の数は増加している。 Currently, for example, the cellular communication function is widely used not only for voice calls and data communication such as mobile phones and smartphones, but also for machine type communication devices (also called MTC devices). The number of including communication terminals (hereinafter referred to as UE (User Equipment) or communication terminals) is increasing.
　多くのマシンタイプ通信（ＭＴＣ）アプリケーションでは、ＭＴＣデバイス側から起動する通信方式と、ネットワーク側からＭＴＣデバイスを起動する通信方式、いずれも必要となる。ネットワーク側からＭＴＣデバイスを起動する通信方式としてはトリガリングがある。このトリガリングはアプリケーションからネットワークを介してＭＴＣデバイスを起動し、通信コネクションを確立するために行うものである。 Many machine type communication (MTC) applications require both a communication method that starts from the MTC device side and a communication method that starts the MTC device from the network side. There is triggering as a communication method for starting the MTC device from the network side. This triggering is performed to activate the MTC device from the application via the network and establish a communication connection.
　3GPP ではＭＴＣデバイスに対するトリガリング方法についての検討が行われており、3GPP TR 23.888では、複数の方法が提案されている。その一つの方法がショートメッセージ・サービス（ＳＭＳ）を使用する方法である。 3GPP® is examining the triggering method for MTC devices, and 3GPP® 23.888 proposes multiple methods. One method is to use Short Message Service (SMS).
　また3GPP TS 23.682では、図９に示す如く、マシンタイプ通信（MTC）のアーキテクチャを定義している。このアーキテクチャでは、外部のアプリケーション・サーバ（ＡＳ）からMTCサーバ(SCS: Service Capability Server)、MTC-IWF(MTC-Interworking Function)などのネットワークノードを経由してＵＥ（ＭＴＣデバイス）をトリガリングするものである。なおMTC-IWFは、スタンドアロンエンティティまたは別のネットワーク要素の機能エンティティであってもよい。また、ＭＴＣデバイスは、携帯電話などのコンピューティングデバイス、センサ、アクチュエータであってもよい。 Also, 3GPP TS 23.682 defines the architecture of machine type communication (MTC) as shown in Fig.9. In this architecture, an external application server (AS) triggers a UE (MTC device) via a network node such as an MTC server (SCS: Service Capability Server) or MTC-IWF (MTC-Interworking Function). It is. Note that the MTC-IWF may be a stand-alone entity or a functional entity of another network element. The MTC device may be a computing device such as a mobile phone, a sensor, or an actuator.
　更に、図９に示す3GPP MTCアーキテクチャでは「制御プレーン」のインタフェースとしてTsp、T4、T5a,b,cインタフェースを定義しており、ＭＴＣサーバはTspインタフェースを介してMTC-IWFと通信する。制御プレーンは、一般に、ネットワーク上のトラフィックを運ぶシグナリングの通信経路であり、データプレーン、転送プレーン、キャリアプレーン、またはベアラプレーンとしても知られている。 Furthermore, in the 3GPP-MTC architecture shown in FIG. 9, Tsp, T4, T5a, b, and c interfaces are defined as “control plane” interfaces, and the MTC server communicates with MTC-IWF via the Tsp interface. The control plane is generally a signaling communication path that carries traffic on the network and is also known as the data plane, forwarding plane, carrier plane, or bearer plane.
　一方、MTCデバイスは、通常ネットワークの「ユーザプレーン」を介してMTCサーバと通信する。ユーザプレーンは、音声通信やデータ通信などのユーザトラフィック（例えば、電子メールやインターネットのウェブ情報）を伝送する通信経路である。セルラ通信での制御プレーンのメッセージの例としては、ページングメッセージ、ショートメッセージサービスメッセージ、ロケーションエリア更新メッセージ、デタッチメッセージ、アタッチメッセージなどがある。 On the other hand, the MTC device normally communicates with the MTC server via the “user plane” of the network. The user plane is a communication path that transmits user traffic such as voice communication and data communication (for example, e-mail and Internet web information). Examples of control plane messages in cellular communication include paging messages, short message service messages, location area update messages, detach messages, and attach messages.
　デバイストリガリングは、アプリケーションサーバ（AS）のようなネットワーク・エンティティによって開始され、通常ネットワークの制御プレーンを介して、デバイスに送信されるメッセージである。デバイストリガリングは、制御プレーン上で送信されるため、IPアドレスは必要とされない代わりに、移動局国際加入者ディレクトリ番号（MSISDN）又はユニフォームリソース識別子（URI）のような外部識別子（External Identifier）を必要とする。 Device triggering is a message initiated by a network entity such as an application server (AS) and sent to the device, usually via the network control plane. Since device triggering is transmitted on the control plane, an IP address is not required, but an external identifier (External Identifier) such as a mobile station international subscriber directory number (MSISDN) or uniform resource identifier (URI) is used. I need.
　図９に示す3GPPアーキテクチャでは、外部アプリケーションサーバ（AS）はMTC-サーバにトリガリング要求メッセージを送り、これを受けたMTCサーバはTspインタフェースを介してMTC-IWFにトリガリング要求を行う。MTC-IWFは、MTCサーバからのトリガ要求を受信すると、HSSと連携してトリガリング要求メッセージの内容から送信元のMTCサーバの認証を行う。認証された場合、MTCデバイスの外部識別子またはMSISDN番号と、国際移動加入者識別子（IMSI）などの内部識別子との間のマッピングを行い、T4およびT5a,b,cなどのコントロールプレーンインタフェースを介してMTCデバイスをトリガリングする。またMTC-IWFは、T4、T5a,b,cインタフェースを介して受信した結果をもとにMTCサーバにトリガ配信の成功または失敗を報告するという動作を行う。 In the 3GPP architecture shown in FIG. 9, the external application server (AS) sends a triggering request message to the MTC-server, and the MTC server that receives this sends a triggering request to the MTC-IWF via the Tsp interface. When the MTC-IWF receives the trigger request from the MTC server, the MTC-IWF authenticates the transmission MTC server from the contents of the triggering request message in cooperation with the HSS. If authenticated, mapping between the external identifier or MSISDN number of the MTC device and an internal identifier such as the International Mobile Subscriber Identifier (IMSI), via a control plane interface such as T4 and T5a, b, c Trigger the MTC device. The MTC-IWF performs an operation of reporting the success or failure of the trigger distribution to the MTC server based on the result received through the T4, T5a, b, and c interfaces.
　SMS-SC（Short Message Service-Service Centre）は、IMSIをもとに上記トリガリング情報を含むトリガリング要求を、MME/SGSN/MSCに送り、MME/SGSN/MSCから基地局を経由してＭＴＣデバイスにトリガリングメッセージが送られる。トリガリングメッセージを受信したＭＴＣデバイスは、トリガリングメッセージが受け入れ可能な場合、その応答としてネットワーク接続要求信号をMME/SGSN/MSCに送り、MME/SGSN/MSCからSMS-SCを経由してMTC-IWF、そしてMTCサーバに到達し、MTCデバイスとMTCサーバ間に通信コネクションが確立される。 SMS-SC (Short-Message-Service-Service-Centre) sends a triggering request including the above triggering information to the MME / SGSN / MSC based on the IMSI, and the MTC via the base station from the MME / SGSN / MSC. A triggering message is sent to the device. If the triggering message is acceptable, the MTC device that has received the triggering message sends a network connection request signal to the MME / SGSN / MSC as a response, and the MTC-SMS message is sent from the MME / SGSN / MSC via the SMS-SC. The IWF and MTC server are reached, and a communication connection is established between the MTC device and the MTC server.
　MTCデバイス、コアネットワーク、アプリケーションサーバが接続された状況において、故意または何らかの障害等により、外部アプリケーション・サーバ（AS）からMTCデバイスへのトリガリングが高い頻度で行われた場合、制御信号の増加に起因するネットワークが輻輳するといった課題があった。 When the MTC device, core network, and application server are connected, if the triggering from the external application server (AS) to the MTC device is frequently performed due to intentional or some sort of failure, the control signal will increase. There was a problem that the resulting network was congested.
　また、MTCデバイスへのトリガリングが高い頻度で行われた場合、MTCデバイスが常にアクティブ・モードに置かれ、バッテリー消費量の増加や、MTCデバイスの動作保障期間の大幅な短縮、さらに極端なケースでは動作停止に追い込まれる場合もある。 In addition, if the MTC device is triggered frequently, the MTC device is always placed in the active mode, which increases battery consumption, significantly shortens the operation guarantee period of the MTC device, and more extreme cases. Then, there is a case where the operation is stopped.
　現在、これらの課題に対して、ネットワーク側での十分な対策は検討されていない。例えば、非特許文献２には、MTC-IWFにおいて各MTCデバイス向けのトリガリングの数量またはレートが閾値を超えた場合、トリガリングの手順を停止するとの記載はある。 Currently, sufficient measures on the network side have not been studied for these issues. For example, Non-Patent Document 2 describes that the triggering procedure is stopped when the number or rate of triggering for each MTC device exceeds a threshold in MTC-IWF.
　しかしながら、非特許文献２の方法ではMTCデバイス毎に一定時間のトリガリングの計測および計測値の記憶が必要となり、デバイスの数が増大すると処理量が増大する。また閾値を超えるとトリガリングメッセージを破棄する方法では、閾値付近でのメッセージ破棄処理が不安定となる場合がある。 However, in the method of Non-Patent Document 2, it is necessary to measure the triggering for a predetermined time and store the measured values for each MTC device, and the processing amount increases as the number of devices increases. Further, in the method of discarding the triggering message when the threshold value is exceeded, the message discarding process near the threshold value may become unstable.
　そこで、本発明は上記課題に鑑みて発明されたものであって、本発明の目的は、ネットワークの安定化や、MTCデバイス等の通信端末への安全なトリガリングを行うことができる通信システム、通信装置、通信方法及びプログラムを提供することである。 Therefore, the present invention has been invented in view of the above problems, and the object of the present invention is a communication system capable of performing network stabilization and safe triggering to a communication terminal such as an MTC device, A communication apparatus, a communication method, and a program are provided.
　本発明の一態様は、トリガリングメッセージにより、端末をトリガリングする無線通信システムであって、トリガリングメッセージの受信履歴を保持する受信履歴メモリと、前記受信履歴に基づいて、前記受信したトリガリングメッセージを処理する確率を算出し、前記確率に基づいて、前記受信したトリガリングメッセージの一部を処理するトリガリングメッセージ処理部とを有する通信システムである。 One aspect of the present invention is a wireless communication system that triggers a terminal using a triggering message, a reception history memory that holds a reception history of a triggering message, and the received triggering based on the reception history The communication system includes a triggering message processing unit that calculates a probability of processing a message and processes a part of the received triggering message based on the probability.
　本発明の一態様は、端末をトリガリングするトリガリングメッセージを受信し、前記端末に送信する通信装置であって、トリガリングメッセージの受信履歴を保持する受信履歴メモリと、前記受信履歴に基づいて、前記受信したトリガリングメッセージを処理する確率を算出し、前記確率に基づいて、トリガリングメッセージを処理するトリガリングメッセージ処理部とを有する通信装置である。 One aspect of the present invention is a communication device that receives a triggering message for triggering a terminal and transmits the message to the terminal, and includes a reception history memory that holds a reception history of the triggering message, and the reception history And a triggering message processing unit that calculates a probability of processing the received triggering message and processes the triggering message based on the probability.
　本発明の一態様は、トリガリングメッセージにより、端末をトリガリングする無線通信方法であって、トリガリングメッセージの受信履歴を保持し、前記受信履歴に基づいて、前記受信したトリガリングメッセージを処理する確率を算出し、前記確率に基づいて、トリガリングメッセージを処理する通信方法である。 One aspect of the present invention is a wireless communication method for triggering a terminal using a triggering message, wherein a reception history of the triggering message is retained, and the received triggering message is processed based on the reception history. A communication method for calculating a probability and processing a triggering message based on the probability.
　本発明の一態様は、端末をトリガリングするトリガリングメッセージを受信し、前記端末に送信するプログラムであって、受信履歴メモリに保持されているトリガリングメッセージの受信履歴に基づいて、前記受信したトリガリングメッセージを処理する確率を算出し、前記確率に基づいて、トリガリングメッセージを処理するトリガリングメッセージ処理を通信装置のプロセッサに実行させるプログラムである。 One aspect of the present invention is a program for receiving a triggering message for triggering a terminal and transmitting the triggering message to the terminal, the received based on a reception history of a triggering message held in a reception history memory. A program for calculating a probability of processing a triggering message and causing the processor of the communication device to execute a triggering message process for processing the triggering message based on the probability.
　本発明によれば、ネットワークの安定化や、MTCデバイス等の通信端末への安全なトリガリングを行うことができる。 According to the present invention, it is possible to perform network stabilization and safe triggering to a communication terminal such as an MTC device.
図１は本発明の実施の形態のブロック図である。FIG. 1 is a block diagram of an embodiment of the present invention. 図２は本発明の実施例の構成例を示す図である。FIG. 2 is a diagram showing a configuration example of the embodiment of the present invention. 図３は本実施例におけるＭＴＣ-ＩＷＦ１０のブロック図である。FIG. 3 is a block diagram of the MTC-IWF 10 in this embodiment. 図４は実施例を説明するための図である。FIG. 4 is a diagram for explaining the embodiment. 図５は実施例を説明するための図である。FIG. 5 is a diagram for explaining the embodiment. 図６は実施例の動作を示すフローチャートである。FIG. 6 is a flowchart showing the operation of the embodiment. 図７は他の実施例の動作を示すフローチャートである。FIG. 7 is a flowchart showing the operation of another embodiment. 図８は本実施例におけるＭＴＣ-ＩＷＦ１０の他の一例を示すブロック図である。FIG. 8 is a block diagram showing another example of the MTC-IWF 10 in the present embodiment. 図９は本発明の関連技術を説明するための図である。FIG. 9 is a diagram for explaining the related art of the present invention.
　本発明の実施の形態を説明する。 Embodiments of the present invention will be described.
　図１は、本発明の実施の形態のブロック図である。 FIG. 1 is a block diagram of an embodiment of the present invention.
　本発明の実施の形態は、トリガリングメッセージにより、端末をトリガリングする無線通信システムであって、トリガリングメッセージの受信履歴を保持する受信履歴メモリ１と、前記受信履歴に基づいて、前記受信したトリガリングメッセージを処理する確率を算出し、前記確率に基づいて、前記受信したトリガリングメッセージの一部を処理するトリガリングメッセージ処理部２とを有する通信システムである。 An embodiment of the present invention is a wireless communication system that triggers a terminal by a triggering message, the reception history memory 1 holding a reception history of the triggering message, and the reception based on the reception history The communication system includes a triggering message processing unit 2 that calculates a probability of processing a triggering message and processes a part of the received triggering message based on the probability.
　ここで、第１の実施の形態におけるネットワークシステムは、ＬＴＥ／ＳＡＥ／ＥＰＳ（Ｌｏｎｇ　Ｔｅｒｍ　Ｅｖｏｌｕｔｉｏｎ／Ｓｙｓｔｅｍ　Ａｒｃｈｉｔｅｃｔｕｒｅ　Ｅｖｏｌｕｔｉｏｎ／Ｅｖｏｌｖｅｄ　Ｐａｃｋｅｔ　Ｓｙｓｔｅｍ）、ＵＭＴＳ、ＧＰＲＳ（Ｇｅｎｅｒａｌ　Ｐａｃｋｅｔ　Ｒａｄｉｏ　Ｓｅｒｖｉｃｅ.）やＧＳＭ（Ｇｌｏｂａｌ　Ｓｙｓｔｅｍ　ＦＯＲ　Ｍｏｂｉｌｅ　Ｃｏｍｍｕｎｉｃａｔｉｏｎｓ）（登録商標）などを含む。 Here, the network system according to the first embodiment is LTE / SAE / EPS (Long Term Evolution / System Architecture Evolution / Evolved Packet System), UMTS, GPRS (General PacketGSMSG). Communication) (registered trademark) and the like.
　また、受信履歴メモリ１とトリガリングメッセージ処理部２とは、ネットワーク上の例えば、MTCサーバ(SCS: Service Capability Server)、又は、MTC-IWF(MTC-Interworking Function)等が備える。 Also, the reception history memory 1 and the triggering message processing unit 2 are provided with, for example, an MTC server (SCS: Service Capability Server) or MTC-IWF (MTC-Interworking Function) on the network.
　受信履歴メモリ１は、ネットワーク上に配置された外部アプリケーションサーバ（AS）等から、ＭＴＣデバイス等の端末を起動するためのトリガリングメッセージを受信し、そのトリガリングメッセージの受信時刻等の受信履歴を取得し、保持するものである。トリガリングメッセージには、外部識別子またはMSISDN番号(External Identifier or MSISDN）、サーバ識別子(SCS-Identifier）、トリガリング参照番号（Trigger reference number）、有効期間（Validity period）、優先度（Priority）、アプリケーション・ポート番号（Application Port Identifier）、トリガリング・ペイロード（Trigger payload）等が含まれる。これらの情報から、例えば、外部識別子またはMSISDN番号(External Identifier or MSISDN）、サーバ識別子(SCS-Identifier）、トリガリング参照番号（Trigger reference number）、アプリケーション・ポート番号（Application Port Identifier）毎に、そのトリガリングメッセージの受信時刻の受信履歴を取得し、保持する。 The reception history memory 1 receives a triggering message for starting a terminal such as an MTC device from an external application server (AS) or the like arranged on the network, and receives a reception history such as a reception time of the triggering message. It is to acquire and hold. The triggering message includes an external identifier or MSISDN number (External Identifier or MSISDN), server identifier (SCS-Identifier), triggering reference number (Trigger reference number), validity period (Validity period), priority (Priority), application Port number (Application Port Identifier), triggering payload (Trigger payload), etc. are included. From this information, for example, for each external identifier or MSISDN number (External Identifier or MSISDN), server identifier (SCS-Identifier), triggering reference number (Trigger reference number), application port number (Application Port Identifier) Acquire and retain the reception history of the triggering message reception time.
　トリガリングメッセージ処理部２は、受信履歴メモリ１が保持している受信履歴に基づいて、受信したトリガリングメッセージを処理する確率を算出し、算出した確率に基づいて、受信したトリガリングメッセージの一部を処理する。ここで、受信したトリガリングメッセージの一部の処理とは、少なくとも一部の処理であり、受信したトリガリングメッセージの全てを、以下に説明する方法で処理しても良い。また、処理とは、例えば、受信したトリガリングメッセージの転送又は破棄であり、更には、転送せずに、本装置のメモリや他の格納場所に格納しておく場合も含まれる。 The triggering message processing unit 2 calculates a probability of processing the received triggering message based on the reception history held in the reception history memory 1, and determines one of the received triggering messages based on the calculated probability. Process parts. Here, the process of a part of the received triggering message is at least a part of the process, and all the received triggering messages may be processed by the method described below. The processing is, for example, transfer or discard of the received triggering message, and further includes a case where the received triggering message is stored in a memory or other storage location of the apparatus without being transferred.
　トリガリングメッセージ処理部２は、受信したトリガリングメッセージを処理（転送又は破棄(転送先に転送せずに、本装置のメモリや他の格納場所に格納しておく場合も含まれる)）する確率（以下、転送確率）を算出し、この転送確率に基づいて、トリガリングメッセージの処理を行う。転送確率は、例えば、トリガリングメッセージの受信間隔が短いほど、トリガリングメッセージを破棄する（転送しない）確率が高くなるように算出する。これは、受信間隔が短いトリガリングメッセージに対して端末が応答しなければならず、バッテリー消費量の増加や、MTCデバイスの動作保障期間の大幅な短縮等の原因ともなり、また、そのようなトリガリングメッセージは、不正なトリガリングメッセージの可能性も高く、更には、ネットワークの安定化を阻害する要因ともなる可能性が高いからである。 The triggering message processing unit 2 processes the received triggering message (transfer or discard (including the case where it is stored in the memory of the present apparatus or other storage location without being transferred to the transfer destination)) (Hereinafter, transfer probability) is calculated, and the triggering message is processed based on the transfer probability. For example, the transfer probability is calculated so that the shorter the triggering message reception interval, the higher the probability of discarding (not transferring) the triggering message. This is because the terminal must respond to a triggering message with a short reception interval, which causes an increase in battery consumption and a significant reduction in the operation guarantee period of the MTC device. This is because the triggering message is highly likely to be an illegal triggering message and further likely to be a factor that hinders network stabilization.
　また、トリガリングメッセージ処理部２は、トリガリングメッセージの受信間隔が、予め定められた値（時間）を上回る（長い）場合は、通常通り、受信したトリガリングメッセージを転送し、予め定められた値（時間）を下回る場合（短い）に、転送確率に基づいてトリガリングメッセージを転送又は破棄するようにしても良い。 The triggering message processing unit 2 forwards the received triggering message as usual when the reception interval of the triggering message is longer (longer) than a predetermined value (time). If the value (time) is below (short), the triggering message may be transferred or discarded based on the transfer probability.
　また、転送確率の具体的な算出方法の例としては、受信したトリガリングメッセージの受信時刻と、前記受信したトリガリングメッセージのひとつ前に受信したトリガリングメッセージの受信時刻との差分時間と、予め定めた基準時間との比の関数に基づいて、転送確率を算出する方法がある。更に、転送確率に、上述した外部識別子またはMSISDN番号(External Identifier or MSISDN）、サーバ識別子(SCS-Identifier）、トリガリング参照番号（Trigger reference number）、有効期間（Validity period）、優先度（Priority）、アプリケーション・ポート番号（Application Port Identifier）等の情報を加味しても良い。例えば、優先度（Priority）が高いトリガリングメッセージについては、トリガリングメッセージの受信間隔が短くても、メッセージが転送される確率が高くなるように、転送確率を調整しても良い。 Further, as an example of a specific calculation method of the transfer probability, the difference time between the reception time of the received triggering message and the reception time of the triggering message received immediately before the received triggering message, There is a method for calculating a transfer probability based on a function of a ratio to a predetermined reference time. Furthermore, the transfer probability includes the above-mentioned external identifier or MSISDN number (External Identifier or MSISDN), server identifier (SCS-Identifier), triggering reference number (Trigger reference number), validity period (Validity period), priority (Priority) Information such as application port number (Application Port Identifier) may be taken into account. For example, for a triggering message with a high priority (Priority), the transfer probability may be adjusted so that the probability that the message will be transferred increases even if the trigger message reception interval is short.
　トリガリングメッセージ処理部２は、算出した転送確率に基づいて、受信したトリガリングメッセージを転送する処理を行う。例えば、受信したトリガリングメッセージの転送確率が１／２である場合、乱数等の方法により、１／２の確率でトリガリングメッセージを次の転送先に転送し、又は、１／２の確率でトリガリングメッセージを破棄(転送先に転送せずに、本装置のメモリや他の格納場所に格納しておく場合も含まれる)する。 The triggering message processing unit 2 performs a process of transferring the received triggering message based on the calculated transfer probability. For example, when the transfer probability of the received triggering message is 1/2, the triggering message is transferred to the next transfer destination with a probability of 1/2 by a method such as a random number, or with a probability of 1/2. Discard the triggering message (including the case where it is stored in the memory of this device or other storage location without being transferred to the transfer destination).
　このように、本実施の形態は、トリガリングメッセージの転送処理を、関連技術のような確定的な方法で行うのではなく、確率でトリガリングメッセージの転送又は破棄を行う。確率的にメッセージ転送又は破棄を行うことで、簡便な方法で、ネットワークの安定化や、MTCデバイス等の通信端末への安全なトリガリングを行うことができる。 As described above, according to the present embodiment, the triggering message transfer process is not performed by a deterministic method such as related technology, but the triggering message is transferred or discarded with probability. By performing message transfer or discarding stochastically, network stabilization and safe triggering to a communication terminal such as an MTC device can be performed by a simple method.
　以下、具体的な実施例を説明する。 Specific examples will be described below.
　本実施例では、ＬＴＥのＭ２Ｍコアネットワークを例にし、ネットワークノードをＭＴＣ-ＩＷＦ(Ｉｎｔｅｒ－Ｗｏｒｋｉｎｇ Ｆｕｎｃｔｉｏｎ)として、ＵＥをＭＴＣデバイスとして説明するが、各種エンティティの名称は各ネットワークの仕様に準ずるものとする。 In this embodiment, an LTE M2M core network is taken as an example, the network node is assumed to be MTC-IWF (Inter-Working Function), and the UE is assumed to be an MTC device, but the names of various entities conform to the specifications of each network. To do.
　図２は本発明の実施例の構成例を示す図である。 FIG. 2 is a diagram showing a configuration example of an embodiment of the present invention.
　図２に示すように、本発明に係るネットワークシステムは、ＭＴＣ－ＩＷＦ１０を含む。ＭＴＣ－ＩＷＦ１０は、ＭＴＣデバイス２０とＳＣＳ(Ｓｅｒｖｉｃｅ　Ｃａｐａｂｉｌｉｔｙ　Ｓｅｒｖｅｒ)３０との間でメッセージを中継するノードとして機能する。尚、ＳＣＳ３０は、ＬＴＥのＭ２ＭコアネットワークではＭＴＣサーバとして機能する。また、上記の通りネットワークノードとしてＭＴＣ-ＩＷＦ１０を用いて説明するが、他のノードとして、ＨＳＳ(Ｈｏｍｅ　Ｓｕｂｓｃｒｉｂｅｒ　Ｓｅｒｖｅｒ)、ＭＭＥ(Ｍｏｂｉｌｉｔｙ　Ｍａｎａｇｅｍｅｎｔ　Ｅｎｔｉｔｙ)、ＳＧＳＮ(Ｓｅｒｖｉｎｇ　ＧＰＲＳ(Ｇｅｎｅｒａｌ　Ｐａｃｋｅｔ　Ｒａｄｉｏ　Ｓｅｒｖｉｃｅ)　Ｓｕｐｐｏｒｔ　Ｎｏｄｅ)、ＭＳＣ(Ｍｏｂｉｌｅ　Ｓｗｉｔｃｈｉｎｇ　Ｃｅｎｔｒｅ)等でもよい。また、以下の説明においては、ＭＭＥ、ＳＧＳＮ及びＭＳＣを“ＭＭＥ／ＳＧＳＮ／ＭＳＣ”と呼称し、符号４０で総称することがある。ＭＴＣデバイス２０とＭＴＣ－ＩＷＦ１０の間の通信は、ＭＭＥ／ＳＧＳＮ／ＭＳＣ４０及びＲＡＮ(Ｒａｄｉｏ　Ａｃｃｅｓｓ　Ｎｅｔｗｏｒｋ)を介して行われる。 As shown in FIG. 2, the network system according to the present invention includes an MTC-IWF 10. The MTC-IWF 10 functions as a node that relays messages between the MTC device 20 and an SCS (Service Capability Server) 30. The SCS 30 functions as an MTC server in the LTE M2M core network. In addition, as described above, MTC-IWF10 will be used as a network node, but other nodes include HSS (Home Subscriber Server), MME (Mobility Management Entity), SGSN (Serving GPRS (General PacketRadioSport). MSC (Mobile Switching Center) may be used. In the following description, MME, SGSN, and MSC are referred to as “MME / SGSN / MSC” and may be collectively referred to by reference numeral 40. Communication between the MTC device 20 and the MTC-IWF 10 is performed via the MME / SGSN / MSC 40 and a RAN (Radio Access Network).
　本実施例におけるＭＴＣ-ＩＷＦ１０は、図３に示す通り、受信履歴メモリ１１と、トリガリングメッセージ処理部１２とを有する。 The MTC-IWF 10 in this embodiment includes a reception history memory 11 and a triggering message processing unit 12 as shown in FIG.
　受信履歴メモリ１１は、ＳＣＳ３０からのトリガリングメッセージの受信時刻を含む受信履歴を取得又は保持する。尚、トリガリングメッセージは、セルラーネットワーク内のエンティティがＭＴＣデバイス２０へ送信する制御メッセージ（ＮＡＳ（Ｎｅｔｗｏｒｋ　Ａｃｃｅｓｓ　Ｓｔｒａｔｕｍ）メッセージ）やＳＭＳ（ショートメッセージ）、ＣＢＳ（Ｃｅｌｌ　Ｂｒｏａｄｃａｓｔ　Ｓｅｒｖｉｃｅ）、ＭＢＭＳ（Ｍｕｌｔｉｍｅｄｉａ　Ｂｒｏａｄｃａｓｔ　ａｎｄ　Ｍｕｌｔｉｃａｓｔ　Ｓｅｒｖｉｃｅ）、さらにはデータパケット（ＩＰパケット）などの様々な種類のメッセージを用いて送信され、本発明ではいずれの種類であっても良い。このとき、トリガリングメッセージには、外部識別子またはMSISDN番号(External Identifier or MSISDN）、サーバ識別子(SCS-Identifier）、トリガリング参照番号（Trigger reference number）、有効期間（Validity period）、優先度（Priority）、アプリケーション・ポート番号（Application Port Identifier）、トリガリング・ペイロード（Trigger payload）等が含まれが、本実施例では、外部識別子またはMSISDN番号(External Identifier or MSISDN）毎に、そのトリガリングメッセージの受信時刻の受信履歴を取得又は記録する。 The reception history memory 11 acquires or holds a reception history including the reception time of the triggering message from the SCS 30. The triggering message is a control message (NAS (Network Access Stratum) message) or SMS (short message), CBS (Cell Broadcast Service), MBMS (Multimedia Broadcast and Multicast) sent by an entity in the cellular network to the MTC device 20. Service), and further, various types of messages such as data packets (IP packets) are transmitted, and any type may be used in the present invention. At this time, the triggering message includes an external identifier or MSISDN number (External Identifier or MSISDN), server identifier (SCS-Identifier), triggering reference number (Trigger reference number), validity period (Validity period), priority (Priority) ), Application port number (Application Port Identifier), triggering payload (Trigger payload), etc., but in this embodiment, for each external identifier or MSISDN number (External Identifier or MSISDN), the triggering message Acquire or record the reception history of the reception time.
　トリガリングメッセージ処理部１２は、受信履歴メモリ１１からの受信履歴に基づいて、受信したトリガリングメッセージの転送確率を算出する。本実施例では、トリガリングメッセージ処理部１２は、トリガリングメッセージを受信したときに、図４に示す如く、一つ前のトリガリングメッセージの受信時刻と今回受信時刻との差分（ΔTi）と予め定めた基準時間（T）との比（ΔTi/T）の関数として、例えば、以下の１次関数の式に従いトリガリングメッセージ転送確率（Pt）を算出する。
Pt = ΔTi/T    if ΔTi＜T
Pt = １        if ΔTi≧T
　トリガリングメッセージ転送確率（Pt）は、一つ前のトリガリングメッセージの受信時刻と今回受信時刻との差分（ΔTi）、すなわち、図５に示す如く、受信間隔が予め定めた基準時間（T）よりも短くなるほど、トリガリングメッセージを転送する確率が低くなる(トリガリングメッセージを破棄する確率が高くなる、又は、自己のメモリや他の場所のメモリに格納しておく)。また、受信間隔（ΔTi）が予め定めた基準時間（T）よりも大きければ、トリガリングメッセージのトリガリングメッセージ転送確率（Pt）は１となり、受信したトリガリングメッセージは基本的にはかならず転送される(トリガリングメッセージは破棄されない)。尚、一般に、xに対して単調増加関数であるF(x)を定義して、Pt=F(ΔTi/T)とトリガリングメッセージ転送確率を算出してよい。 The triggering message processing unit 12 calculates the transfer probability of the received triggering message based on the reception history from the reception history memory 11. In this embodiment, when the triggering message processing unit 12 receives the triggering message, as shown in FIG. 4, the difference (ΔTi) between the reception time of the previous triggering message and the current reception time is calculated in advance. As a function of the ratio (ΔTi / T) to the determined reference time (T), for example, the triggering message transfer probability (Pt) is calculated according to the following linear function expression.
Pt = ΔTi / T if ΔTi <T
Pt = 1 if ΔTi ≧ T
The triggering message transfer probability (Pt) is the difference (ΔTi) between the reception time of the previous triggering message and the current reception time, that is, the reference time (T) with a predetermined reception interval as shown in FIG. The shorter the time, the lower the probability of transferring the triggering message (the higher the probability of discarding the triggering message, or it is stored in its own memory or in another memory). If the reception interval (ΔTi) is larger than a predetermined reference time (T), the triggering message transfer probability (Pt) of the triggering message is 1, and the received triggering message is basically transferred. (Triggering messages are not discarded). In general, F (x) that is a monotonically increasing function with respect to x may be defined, and Pt = F (ΔTi / T) and the triggering message transfer probability may be calculated.
　このようにして算出されたトリガリングメッセージ転送確率（Pt）に基づいて、受信したＳＣＳ３０からのトリガリングメッセージを、ＭＭＥ／ＳＧＳＮ／ＭＳＣ４０に転送し、又は、受信したＳＣＳ３０からのトリガリングメッセージを破棄、又は、自己のメモリや他の場所のメモリに格納する処理を行う。 Based on the triggering message transfer probability (Pt) calculated in this way, the received triggering message from the SCS 30 is transferred to the MME / SGSN / MSC 40, or the received triggering message from the SCS 30 is discarded. Alternatively, a process of storing in its own memory or a memory in another location is performed.
　次に、上記のように構成された実施例の動作を説明する。図６は実施例の動作を示すフローチャートである。 Next, the operation of the embodiment configured as described above will be described. FIG. 6 is a flowchart showing the operation of the embodiment.
　まず、ＳＣＳ３０からトリガリングメッセージ（i）を受信し（Step　１００）、トリガリングメッセージ（i）の受信履歴を記録する（Step　１０１）。 First, the triggering message (i) is received from the SCS 30 (Step 100), and the reception history of the triggering message (i) is recorded (Step 101).
　次に、トリガリングメッセージ（i-１）の受信履歴の受信時刻と、トリガリングメッセージ（i）の受信時刻との差分（ΔTi）を算出する（Step　１０２）。算出された差分（ΔTi）が予め定められた基準時間（T）よりも小さい場合（Step　１０３）、トリガリングメッセージ転送確率（Pt）=ΔTi/T で、トリガリングメッセージ（i）を、ＭＭＥ／ＳＧＳＮ／ＭＳＣ４０に転送に転送する（転送されないトリガリングメッセージ（i）は破棄、又は、自己のメモリや他の場所のメモリに格納する処理を行う）（Step　１０４）。一方、算出された差分（ΔTi）が予め定められた基準時間（T）よりも大きい場合（Step　１０３）、確率によらず、トリガリングメッセージ（i）をＭＭＥ／ＳＧＳＮ／ＭＳＣ４０に転送に転送する（Step　１０５）。そして、次のトリガリングメッセージ（i+1）を受信する（Step　１０６）。 Next, the difference (ΔTi) between the reception time of the reception history of the triggering message (i-1) and the reception time of the triggering message (i) is calculated (Step 102). When the calculated difference (ΔTi) is smaller than a predetermined reference time (T) (Step 103), the triggering message transfer probability (Pt) = ΔTi / T and the triggering message (i) is set to MME / Transfer to SGSN / MSC 40 for transfer (triggering message (i) not transferred is discarded or stored in its own memory or memory in another location) (Step 104). On the other hand, when the calculated difference (ΔTi) is larger than the predetermined reference time (T) (Step 103), the triggering message (i) is transferred to the MME / SGSN / MSC 40 for transfer regardless of the probability. (Step 105). Then, the next triggering message (i + 1) is received (Step 106).
　このように、本実施例では、トリガリングメッセージの転送処理を、確率でトリガリングメッセージの転送又は破棄（又は、自己のメモリや他の場所のメモリに格納）する処理を行う。確率的にメッセージ転送又は破棄（又は、自己のメモリや他の場所のメモリに格納）を行うことで、簡便な方法で、ネットワークの安定化や、MTCデバイス等の通信端末への安全なトリガリングを行うことができる。また、受信間隔が予め定めた基準時間（T）よりも短い場合に、確率的にメッセージ転送又は破棄（又は、自己のメモリや他の場所のメモリに格納）を行うので、受信間隔が予め定めた基準時間（T）よりも長い場合には、通常の処理と変わらないので、判定処理に負荷がかかることがない。 As described above, in the present embodiment, the triggering message transfer process is a process of transferring or discarding the triggering message with probability (or storing it in its own memory or a memory in another location). Probably transfer messages or discard them (or store them in their own memory or other memory) to stabilize the network and secure triggering to communication terminals such as MTC devices in a simple way. It can be performed. In addition, when the reception interval is shorter than a predetermined reference time (T), message transmission or discarding (or storage in its own memory or another memory) is performed stochastically, so the reception interval is predetermined. If it is longer than the reference time (T), it is not different from the normal process, so that the determination process is not burdened.
　次に、上述した実施例の変形例を説明する。 Next, a modification of the above embodiment will be described.
　トリガリングメッセージの転送確率は、上述したように、受信間隔が予め定めた基準時間よりも短くなるほど、トリガリングメッセージを転送する確率が低くなり、トリガリングメッセージを破棄（又は、自己のメモリや他の場所のメモリに格納）する確率が高くなる。すなわち、トリガリングメッセージの転送確率と、トリガリングメッセージを破棄する破棄確率とは、表裏一体の関係をなすものである。 As described above, the triggering message transfer probability decreases as the reception interval becomes shorter than a predetermined reference time, and the triggering message transfer probability decreases. Stored in the memory of the location). That is, the transfer probability of the triggering message and the discard probability of discarding the triggering message are in a relationship of two sides.
　そこで、本実施例の変形例は、トリガリングメッセージを破棄（又は、自己のメモリや他の場所のメモリに格納）する観点から、トリガリングメッセージ処理部１２の処理を変形するものである。 Therefore, the modification of the present embodiment is a modification of the processing of the triggering message processing unit 12 from the viewpoint of discarding the triggering message (or storing it in its own memory or a memory in another location).
　トリガリングメッセージ処理部１２は、上述した実施例と同様に、受信履歴メモリ１１からの受信履歴に基づいて、受信したトリガリングメッセージの転送確率を算出する。すなわち、下記の通りである。
Pt = ΔTi/T    if ΔTi＜T
Pt = １        if ΔTi≧T
　このように算出されたトリガリングメッセージ転送確率（Pt）から、トリガリングメッセージの破棄確率(Pr)を、以下の式により算出する。
Pr = 1-Pt
　すなわち、受信間隔が予め定めた基準時間（T）よりも短くなるほど、トリガリングメッセージを破棄（又は、自己のメモリや他の場所のメモリに格納）する確率が高くなる。また、受信間隔（ΔTi）が予め定めた基準時間（T）よりも大きければ、トリガリングメッセージの破棄確率(Pr)は０となり、受信したトリガリングメッセージは基本的には破棄されず、かならず転送先に転送される。 The triggering message processing unit 12 calculates the transfer probability of the received triggering message based on the reception history from the reception history memory 11 as in the above-described embodiment. That is, it is as follows.
Pt = ΔTi / T if ΔTi <T
Pt = 1 if ΔTi ≧ T
From the triggering message transfer probability (Pt) calculated in this way, the triggering message discard probability (Pr) is calculated by the following equation.
Pr = 1-Pt
That is, as the reception interval becomes shorter than the predetermined reference time (T), the probability that the triggering message is discarded (or stored in its own memory or a memory in another location) increases. If the reception interval (ΔTi) is larger than the predetermined reference time (T), the triggering message discard probability (Pr) is 0, and the received triggering message is not basically discarded and is always transferred. Forwarded first.
　トリガリングメッセージ処理部１２は、算出した破棄確率(Pr)に基づいて、受信したトリガリングメッセージを破棄（又は、自己のメモリや他の場所のメモリに格納）する処理を行う。例えば、受信したトリガリングメッセージの破棄確率(Pr)の乱数によりトリガリングメッセージを破棄（又は、自己のメモリや他の場所のメモリに格納）する。 The triggering message processing unit 12 performs a process of discarding the received triggering message (or storing it in its own memory or a memory in another location) based on the calculated discard probability (Pr). For example, the triggering message is discarded (or stored in its own memory or a memory in another location) with a random number of the discard probability (Pr) of the received triggering message.
　次に、上記のように構成された実施例の動作を説明する。図７は実施例の変形例の動作を示すフローチャートである。 Next, the operation of the embodiment configured as described above will be described. FIG. 7 is a flowchart showing the operation of a modification of the embodiment.
　まず、ＳＣＳ３０からトリガリングメッセージ（i）を受信し（Step　２００）、トリガリングメッセージ（i）の受信時刻等の受信履歴を記録する（Step　２０１）。 First, the triggering message (i) is received from the SCS 30 (Step 200), and the reception history such as the reception time of the triggering message (i) is recorded (Step 201).
　次に、トリガリングメッセージ（i-１）の受信時刻と、トリガリングメッセージ（i）のトリガリングメッセージの破棄確率(Pr)を算出する（Step　２０２）。算出されたトリガリングメッセージの破棄確率(Pr)に基づいて、例えば、乱数を発生させ、トリガリングメッセージ（i）を破棄（又は、自己のメモリや他の場所のメモリに格納）するかの判断を行う（Step　２０３）。トリガリングメッセージ（i）を破棄（又は、自己のメモリや他の場所のメモリに格納）する場合は、トリガリングメッセージ（i）の転送処理を中止し、トリガリングメッセージ（i）を破棄（又は、自己のメモリや他の場所のメモリに格納）する（Step　２０４）。トリガリングメッセージ（i）を破棄しない場合は、トリガリングメッセージ（i）を、ＭＭＥ／ＳＧＳＮ／ＭＳＣ４０に転送に転送する（Step　２０５）。そして、次のトリガリングメッセージ（i+1）を受信する（Step　２０６）。 Next, the reception time of the triggering message (i-1) and the triggering message discard probability (Pr) of the triggering message (i) are calculated (Step 202). Based on the calculated triggering message discard probability (Pr), for example, whether to generate a random number and discard the triggering message (i) (or store it in its own memory or memory elsewhere) (Step 203). When discarding the triggering message (i) (or storing it in its own memory or other memory), stop the triggering message (i) transfer process and discard the triggering message (i) (or , Stored in its own memory or memory in another location) (Step 204). If the triggering message (i) is not discarded, the triggering message (i) is transferred to the MME / SGSN / MSC 40 for transfer (Step 205). Then, the next triggering message (i + 1) is received (Step 206).
　このように、トリガリングメッセージの破棄確率(Pr)を算出して処理を行っても、トリガリングメッセージ転送確率（Pt）の処理と同様な効果を得ることができる。 Thus, even if the processing is performed by calculating the triggering message discard probability (Pr), the same effect as the processing of the triggering message transfer probability (Pt) can be obtained.
　尚、上述した実施例では、トリガリングメッセージに優先度を付けずに、同様な処理を行う例を説明した。 In the above-described embodiment, an example in which similar processing is performed without assigning priority to the triggering message has been described.
　しかし、トリガリングメッセージの内容、すなわち、外部識別子またはMSISDN番号(External Identifier or MSISDN）、サーバ識別子(SCS-Identifier）、トリガリング参照番号（Trigger reference number）、有効期間（Validity period）、優先度（Priority）、アプリケーション・ポート番号（Application Port Identifier）等の情報を考慮して、トリガリングメッセージ転送確率又は、トリガリングメッセージ破棄確率を算出しても良い。例えば、優先度（Priority）によって変化するパラメータZ(0 ≦ Z ≦ 1)であり、0に近いほど優先度は高い）を、以下のように、上述した式に適用することで、トリガリングメッセージ転送確率（Pt）を算出しても良い。 However, the contents of the triggering message: external identifier or MSISDN number (External Identifier or MSISDN), server identifier (SCS-Identifier), triggering reference number (Trigger reference number), validity period (Validity period), priority ( The triggering message transfer probability or the triggering message discard probability may be calculated in consideration of information such as (Priority) and application port number (Application Port Identifier). For example, by applying the parameter Z (0 ≦ Z ≦ 1) that changes according to the priority (the closer the priority is to 0, the higher the priority is) to the above formula, the triggering message is as follows: A transfer probability (Pt) may be calculated.
　　　Pt = ΔTi/T　　　if ΔTi < Z・T
　　　　　　1　　　　　if ΔT1 ≧Z・T
　このように、トリガリングメッセージの内容による優先度を考慮して、トリガリングメッセージ転送確率、又は、トリガリングメッセージ破棄確率を算出することにより、トリガリングメッセージの転送を優先度に応じて個別に制御しつつも、ネットワークの安定化や、MTCデバイス等の通信端末への安全なトリガリングを行うことができる。 Pt = ΔTi / T if ΔTi <Z ・ T
1 if ΔT1 ≧ Z ・ T
In this way, the triggering message transfer probability or the triggering message discard probability is calculated in consideration of the priority according to the contents of the triggering message, and the triggering message transfer is individually controlled according to the priority. However, it is possible to stabilize the network and perform safe triggering to communication terminals such as MTC devices.
　更に、トリガリングメッセージを完全に破棄せず、自己のメモリや他の場所のメモリに格納し、格納されたトリガリングメッセージの発信元を解析することにより、不正の可能性が高いトリガリングの発信元の特定をすることができる。 Furthermore, triggering messages that are highly likely to be fraudulent are analyzed by not storing the triggering messages completely, but storing them in their own memory or other memory, and analyzing the source of the stored triggering messages. The original identification can be made.
　尚、上述した実施例では、ＭＴＣ-ＩＷＦが、受信履歴メモリ１１と、トリガリングメッセージ処理部１２とを備える例を説明したが、MTCサーバ(SCS: Service Capability Server)が、受信履歴メモリ１１と、トリガリングメッセージ処理部１２とを備え、同様な処理を行っても良い。この場合、トリガリングメッセージの受信先、転送先が異なるが、他の処理は同様である。 In the above-described embodiment, the example in which the MTC-IWF includes the reception history memory 11 and the triggering message processing unit 12 has been described. However, the MTC server (SCS: Service Capability Server) The triggering message processing unit 12 may be provided to perform the same processing. In this case, the receiving destination and forwarding destination of the triggering message are different, but the other processes are the same.
　尚、上述した実施の形態では、各部をハードウェアで構成したが、上述した動作の処理を情報処理装置（ＣＰＵ等のプロセッサ）に行わせるプログラムによっても構成できる。この場合、プログラムメモリに格納されているプログラムで動作するプロセッサによって、上述した実施の形態と同様の機能、動作を実現させる。 In the above-described embodiment, each unit is configured by hardware, but may be configured by a program that causes an information processing apparatus (a processor such as a CPU) to perform the above-described operation processing. In this case, functions and operations similar to those of the above-described embodiment are realized by a processor that operates according to a program stored in the program memory.
　例えば、ＭＴＣ-ＩＷＦ１０は、図８に示す如く、メモリ１００と、メモリ１０１と、ＣＰＵ１０２とから構成されるコンピュータシステムによって実現可能である。この場合、メモリ１００には、ＳＣＳ３０からのトリガリングメッセージの受信時刻を含む受信履歴が取得又は保持されている。また、メモリ１０１には、上述したトリガリングメッセージ処理部１２に対応する処理を行うプログラムが格納されている。そして、ＣＰＵ１０２がメモリ１０１に格納されているプログラムを実行することで、トリガリングメッセージ処理部１２の機能が実現される。 For example, the MTC-IWF 10 can be realized by a computer system including a memory 100, a memory 101, and a CPU 102 as shown in FIG. In this case, the reception history including the reception time of the triggering message from the SCS 30 is acquired or held in the memory 100. Further, the memory 101 stores a program for performing processing corresponding to the triggering message processing unit 12 described above. Then, the function of the triggering message processing unit 12 is realized by the CPU 102 executing the program stored in the memory 101.
　また、上記の実施形態の一部又は全部は、以下の付記のようにも記載されうるが、以下には限られない。 Further, a part or all of the above embodiment can be described as in the following supplementary notes, but is not limited thereto.
　［付記１］
　トリガリングメッセージにより、端末をトリガリングする無線通信システムであって、
　トリガリングメッセージの受信履歴を保持する受信履歴メモリと、
　前記受信履歴に基づいて、前記受信したトリガリングメッセージを処理する確率を算出し、前記確率に基づいて、前記受信したトリガリングメッセージの一部を処理するトリガリングメッセージ処理部と
を有する通信システム。 [Appendix 1]
A wireless communication system for triggering a terminal by a triggering message,
A reception history memory that holds the reception history of triggering messages;
A communication system comprising: a triggering message processing unit that calculates a probability of processing the received triggering message based on the reception history, and processes a part of the received triggering message based on the probability.
　［付記２］
　前記トリガリングメッセージ処理部は、受信したトリガリングメッセージを転送又は破棄する
付記１に記載の通信システム。 [Appendix 2]
The communication system according to attachment 1, wherein the triggering message processing unit transfers or discards the received triggering message.
　［付記３］
　前記トリガリングメッセージ処理部は、トリガリングメッセージの受信間隔が短いほど、トリガリングメッセージを破棄する確率が高くなるように算出する
付記１又は付記２に記載の通信システム。 [Appendix 3]
The communication system according to Supplementary Note 1 or Supplementary Note 2, wherein the triggering message processing unit calculates the probability that the triggering message is discarded as the reception interval of the triggering message is shorter.
　［付記４］
　前記トリガリングメッセージ処理部は、トリガリングメッセージの受信間隔が、予め定められた値を下回る場合、前記確率に基づいてトリガリングメッセージを破棄する
付記１から付記３のいずれかに記載の通信システム。 [Appendix 4]
The communication system according to any one of appendix 1 to appendix 3, wherein the triggering message processing unit discards the triggering message based on the probability when a reception interval of the triggering message is less than a predetermined value.
　［付記５］
　前記トリガリングメッセージ処理部は、受信したトリガリングメッセージの受信時刻と前記受信したトリガリングメッセージのひとつ前に受信したトリガリングメッセージの受信時刻との差分時間と、予め定めた基準時間との比の関数に基づく確率で、トリガリングメッセージを破棄する
付記１から付記４のいずれかに記載の通信システム。 [Appendix 5]
The triggering message processing unit has a ratio of a difference time between a reception time of the received triggering message and a reception time of the triggering message received immediately before the received triggering message, and a predetermined reference time. The communication system according to any one of appendix 1 to appendix 4, wherein the triggering message is discarded with a probability based on a function.
　［付記６］
　前記トリガリングメッセージ処理部は、受信したトリガリングメッセージの受信時刻と前記受信したトリガリングメッセージのひとつ前に受信したトリガリングメッセージの受信時刻との差分時間が、予め定めた基準時間を下回る場合、前記差分時間と前記予め定めた基準時間との比の関数に基づく確率で、トリガリングメッセージの転送を行う
付記１から付記４のいずれかに記載の通信システム。 [Appendix 6]
When the difference time between the reception time of the received triggering message and the reception time of the triggering message received immediately before the received triggering message is less than a predetermined reference time, the triggering message processing unit, The communication system according to any one of appendix 1 to appendix 4, wherein a triggering message is transferred with a probability based on a function of a ratio between the differential time and the predetermined reference time.
　［付記７］
　前記トリガリングメッセージ処理部は、トリガリングメッセージに含まれる端末の外部識別子又はMSISDN番号、サーバ識別子、トリガリング参照番号、有効期間、優先度、アプリケーション・ポート番号のいずれかを加味して、前記確率を算出する
付記１から付記６のいずれかに記載の通信システム。 [Appendix 7]
The triggering message processing unit includes the terminal's external identifier or MSISDN number, server identifier, triggering reference number, validity period, priority, application port number included in the triggering message, and the probability. The communication system according to any one of appendix 1 to appendix 6, which calculates
　［付記８］
　MTCサーバ(SCS: Service Capability Server)、又は、MTC-IWF(MTC-Interworking Function)が、前記受信履歴メモリと、前記トリガリングメッセージ処理部とを有する
付記１から付記７のいずれかに記載の通信システム。 [Appendix 8]
The communication according to any one of appendix 1 to appendix 7, wherein an MTC server (SCS: Service Capability Server) or MTC-IWF (MTC-Interworking Function) includes the reception history memory and the triggering message processing unit. system.
　［付記９］
　端末をトリガリングするトリガリングメッセージを受信し、前記端末に送信する通信装置であって、
　トリガリングメッセージの受信履歴を保持する受信履歴メモリと、
　前記受信履歴に基づいて、前記受信したトリガリングメッセージを処理する確率を算出し、前記確率に基づいて、トリガリングメッセージを処理するトリガリングメッセージ処理部と
を有する通信装置。 [Appendix 9]
A communication device that receives a triggering message for triggering a terminal and transmits the message to the terminal,
A reception history memory that holds the reception history of triggering messages;
A communication apparatus comprising: a triggering message processing unit that calculates a probability of processing the received triggering message based on the reception history and processes the triggering message based on the probability.
　［付記１０］
　前記トリガリングメッセージ処理部は、受信したトリガリングメッセージを転送又は破棄する
付記９に記載の通信装置。 [Appendix 10]
The communication apparatus according to appendix 9, wherein the triggering message processing unit transfers or discards the received triggering message.
　［付記１１］
　前記トリガリングメッセージ処理部は、トリガリングメッセージの受信間隔が短いほど、トリガリングメッセージを破棄する確率が高くなるように算出する
付記９又は付記１０に記載の通信装置。 [Appendix 11]
The communication device according to Supplementary Note 9 or Supplementary Note 10, wherein the triggering message processing unit calculates the probability that the triggering message is discarded as the reception interval of the triggering message is shorter.
　［付記１２］
　前記トリガリングメッセージ処理部は、トリガリングメッセージの受信間隔が、予め定められた値を下回る場合、前記確率に基づいてトリガリングメッセージを破棄する
付記９から付記１１のいずれかに記載の通信装置。 [Appendix 12]
The communication device according to any one of appendix 9 to appendix 11, wherein the triggering message processing unit discards the triggering message based on the probability when a reception interval of the triggering message is less than a predetermined value.
　［付記１３］
　前記トリガリングメッセージ処理部は、受信したトリガリングメッセージの受信時刻と前記受信したトリガリングメッセージのひとつ前に受信したトリガリングメッセージの受信時刻との差分時間と、予め定めた基準時間との比の関数に基づく確率で、トリガリングメッセージを破棄する
付記９から付記１２のいずれかに記載の通信装置。 [Appendix 13]
The triggering message processing unit has a ratio of a difference time between a reception time of the received triggering message and a reception time of the triggering message received immediately before the received triggering message, and a predetermined reference time. 13. The communication device according to any one of appendix 9 to appendix 12, wherein the triggering message is discarded with a probability based on a function.
　［付記１４］
　前記トリガリングメッセージ処理部は、受信したトリガリングメッセージの受信時刻と前記受信したトリガリングメッセージのひとつ前に受信したトリガリングメッセージの受信時刻との差分時間が、予め定めた基準時間を下回る場合、前記差分時間と前記予め定めた基準時間との比の関数に基づく確率で、トリガリングメッセージの転送を行う
付記９から付記１２のいずれかに記載の通信装置。 [Appendix 14]
When the difference time between the reception time of the received triggering message and the reception time of the triggering message received immediately before the received triggering message is less than a predetermined reference time, the triggering message processing unit, The communication device according to any one of appendix 9 to appendix 12, wherein a triggering message is transferred with a probability based on a function of a ratio between the differential time and the predetermined reference time.
　［付記１５］
　前記トリガリングメッセージ処理部は、トリガリングメッセージに含まれる端末の外部識別子又はMSISDN番号、サーバ識別子、トリガリング参照番号、有効期間、優先度、アプリケーション・ポート番号のいずれかを加味して、前記確率を算出する
付記９から付記１４のいずれかに記載の通信装置。 [Appendix 15]
The triggering message processing unit includes the terminal's external identifier or MSISDN number, server identifier, triggering reference number, validity period, priority, application port number included in the triggering message, and the probability. 15. The communication device according to any one of appendix 9 to appendix 14, which calculates
　［付記１６］
　前記通信装置が、MTCサーバ(SCS: Service Capability Server)、又は、MTC-IWF(MTC-Interworking Function)である
付記９から付記１５のいずれかに記載の通信装置。 [Appendix 16]
The communication apparatus according to any one of appendix 9 to appendix 15, wherein the communication apparatus is an MTC server (SCS: Service Capability Server) or an MTC-IWF (MTC-Interworking Function).
　［付記１７］
　トリガリングメッセージにより、端末をトリガリングする無線通信方法であって、
　トリガリングメッセージの受信履歴を保持し、
　前記受信履歴に基づいて、前記受信したトリガリングメッセージを処理する確率を算出し、前記確率に基づいて、トリガリングメッセージを処理する
通信方法。 [Appendix 17]
A wireless communication method for triggering a terminal by a triggering message,
Holds the reception history of triggering messages,
A communication method for calculating a probability of processing the received triggering message based on the reception history and processing the triggering message based on the probability.
　［付記１８］
　前記処理は、前記受信したトリガリングメッセージを転送又は破棄である
付記１８に記載の通信方法。 [Appendix 18]
The communication method according to appendix 18, wherein the process is transfer or discard of the received triggering message.
　［付記１９］
　トリガリングメッセージの受信間隔が短いほど、トリガリングメッセージを破棄する確率が高くなるように算出する
付記１７又は付記１８に記載の通信方法。 [Appendix 19]
The communication method according to supplementary note 17 or supplementary note 18, wherein the probability that the triggering message is discarded increases as the reception interval of the triggering message is shorter.
　［付記２０］
　トリガリングメッセージの受信間隔が、予め定められた値を下回る場合、前記確率に基づいてトリガリングメッセージを破棄する
付記１７から付記１９のいずれかに記載の通信方法。 [Appendix 20]
The communication method according to any one of appendix 17 to appendix 19, wherein when the triggering message reception interval is less than a predetermined value, the triggering message is discarded based on the probability.
　［付記２１］
　受信したトリガリングメッセージの受信時刻と前記受信したトリガリングメッセージのひとつ前に受信したトリガリングメッセージの受信時刻との差分時間と、予め定めた基準時間との比の関数に基づく確率で、トリガリングメッセージを破棄する
付記１７から付記２０のいずれかに記載の通信方法。 [Appendix 21]
Triggering is performed with a probability based on a function of a ratio between a difference time between the reception time of the received triggering message and the reception time of the triggering message received immediately before the received triggering message and a predetermined reference time. The communication method according to any one of appendix 17 to appendix 20, wherein the message is discarded.
　［付記２２］
　受信したトリガリングメッセージの受信時刻と前記受信したトリガリングメッセージのひとつ前に受信したトリガリングメッセージの受信時刻との差分時間が、予め定めた基準時間を下回る場合、前記差分時間と前記予め定めた基準時間との比の関数に基づく確率で、トリガリングメッセージの転送を行う
付記１７から付記２１のいずれかに記載の通信方法。 [Appendix 22]
When the difference time between the reception time of the received triggering message and the reception time of the triggering message received immediately before the received triggering message is less than a predetermined reference time, the difference time and the predetermined time The communication method according to any one of appendix 17 to appendix 21, wherein a triggering message is transferred with a probability based on a function of a ratio to a reference time.
　［付記２３］
　トリガリングメッセージに含まれる端末の外部識別子又はMSISDN番号、サーバ識別子、トリガリング参照番号、有効期間、優先度、アプリケーション・ポート番号のいずれかを加味して、前記確率を算出する
付記１７から付記２２のいずれかに記載の通信方法。 [Appendix 23]
APPENDIX 17 to APPENDIX 22 for calculating the probability in consideration of any of the external identifier or MSISDN number of the terminal included in the triggering message, the server identifier, the triggering reference number, the validity period, the priority, and the application port number The communication method according to any one of the above.
　［付記２４］
　MTCサーバ(SCS: Service Capability Server)、又は、MTC-IWF(MTC-Interworking Function)が、
　トリガリングメッセージの受信履歴を保持し、
　前記受信履歴に基づいて、前記受信したトリガリングメッセージを処理する確率を算出し、前記確率に基づいて、トリガリングメッセージを処理する
付記１７から付記２３のいずれかに記載の通信方法。 [Appendix 24]
MTC server (SCS: Service Capability Server) or MTC-IWF (MTC-Interworking Function)
Holds the reception history of triggering messages,
24. The communication method according to any one of appendix 17 to appendix 23, wherein a probability of processing the received triggering message is calculated based on the reception history, and the triggering message is processed based on the probability.
　［付記２５］
　端末をトリガリングするトリガリングメッセージを受信し、前記端末に送信するプログラムであって、
　受信履歴メモリに保持されているトリガリングメッセージの受信履歴に基づいて、前記受信したトリガリングメッセージを処理する確率を算出し、前記確率に基づいて、トリガリングメッセージを処理するトリガリングメッセージ処理を
通信装置のプロセッサに実行させるプログラム。 [Appendix 25]
A program for receiving a triggering message for triggering a terminal and transmitting the message to the terminal,
Calculates the probability of processing the received triggering message based on the reception history of the triggering message held in the reception history memory, and communicates the triggering message processing for processing the triggering message based on the probability. A program to be executed by the processor of the device.
　［付記２６］
　前記トリガリングメッセージ処理は、受信したトリガリングメッセージを転送又は破棄する
付記２５に記載のプログラム。 [Appendix 26]
The program according to attachment 25, wherein the triggering message processing transfers or discards the received triggering message.
　［付記２７］
　前記トリガリングメッセージ処理は、トリガリングメッセージの受信間隔が短いほど、トリガリングメッセージを破棄する確率が高くなるように算出する
付記２５又は付記２６に記載のプログラム。 [Appendix 27]
27. The program according to appendix 25 or appendix 26, wherein the triggering message processing is calculated such that the probability of discarding the triggering message increases as the reception interval of the triggering message is shorter.
　［付記２８］
　前記トリガリングメッセージ処理は、トリガリングメッセージの受信間隔が、予め定められた値を下回る場合、前記確率に基づいてトリガリングメッセージを破棄する
付記２５から付記２７のいずれかに記載のプログラム。 [Appendix 28]
28. The program according to any one of appendix 25 to appendix 27, wherein the triggering message processing discards the triggering message based on the probability when a reception interval of the triggering message is less than a predetermined value.
　［付記２９］
　前記トリガリングメッセージ処理は、受信したトリガリングメッセージの受信時刻と前記受信したトリガリングメッセージのひとつ前に受信したトリガリングメッセージの受信時刻との差分時間と、予め定めた基準時間との比の関数に基づく確率で、トリガリングメッセージを破棄する
付記２５から付記２８のいずれかに記載のプログラム。 [Appendix 29]
The triggering message processing is a function of a ratio of a difference time between a reception time of the received triggering message and a reception time of the triggering message received immediately before the received triggering message and a predetermined reference time. 29. The program according to any one of appendix 25 to appendix 28, wherein the triggering message is discarded with a probability based on.
　［付記３０］
　前記トリガリングメッセージ処理は、受信したトリガリングメッセージの受信時刻と前記受信したトリガリングメッセージのひとつ前に受信したトリガリングメッセージの受信時刻との差分時間が、予め定めた基準時間を下回る場合、前記差分時間と前記予め定めた基準時間との比の関数に基づく確率で、トリガリングメッセージの転送を行う
付記２５から付記２８のいずれかに記載のプログラム。 [Appendix 30]
The triggering message processing is performed when the difference time between the reception time of the received triggering message and the reception time of the triggering message received immediately before the received triggering message is lower than a predetermined reference time, 29. The program according to any one of supplementary notes 25 to 28, wherein a triggering message is transferred with a probability based on a function of a ratio between a difference time and the predetermined reference time.
　［付記３１］
　前記トリガリングメッセージ処理は、トリガリングメッセージに含まれる端末の外部識別子又はMSISDN番号、サーバ識別子、トリガリング参照番号、有効期間、優先度、アプリケーション・ポート番号のいずれかを加味して、前記確率を算出する
付記２５から付記３０のいずれかに記載のプログラム。 [Appendix 31]
In the triggering message processing, the probability is calculated by taking into account any of an external identifier or MSISDN number of a terminal included in the triggering message, a server identifier, a triggering reference number, a validity period, a priority, and an application port number. The program according to any one of Supplementary Note 25 to Supplementary Note 30 to be calculated.
　［付記３２］
　前記通信装置が、MTCサーバ(SCS: Service Capability Server)、又は、MTC-IWF(MTC-Interworking Function)である
付記２５から付記３１のいずれかに記載のプログラム。 [Appendix 32]
32. The program according to any one of appendix 25 to appendix 31, wherein the communication device is an MTC server (SCS: Service Capability Server) or an MTC-IWF (MTC-Interworking Function).
　以上好ましい実施の形態をあげて本発明を説明したが、本発明は必ずしも上記実施の形態に限定されるものではなく、その技術的思想の範囲内において様々に変形し実施することが出来る。 Although the present invention has been described with reference to the preferred embodiments, the present invention is not necessarily limited to the above-described embodiments, and various modifications can be made within the scope of the technical idea.
　本出願は、２０１５年８月５日に出願された日本出願特願２０１５－１５５２８８号を基礎とする優先権を主張し、その開示の全てをここに取り込む。 This application claims priority based on Japanese Patent Application No. 2015-155288 filed on Aug. 5, 2015, the entire disclosure of which is incorporated herein.
１　　　受信履歴メモリ
２　　　トリガリングメッセージ処理部
１０　　ＭＴＣ－ＩＷＦ
１１　　受信履歴メモリ
１２　　トリガリングメッセージ処理部
２０　　ＭＴＣデバイス
３０　　ＳＣＳ
４０　　ＭＭＥ／ＳＧＳＮ／ＭＳＣ
１００　メモリ
１０１　メモリ
１０２　ＣＰＵ 1 Reception History Memory 2 Triggering Message Processing Unit 10 MTC-IWF
11 Reception History Memory 12 Triggering Message Processing Unit 20 MTC Device 30 SCS
40 MME / SGSN / MSC
100 memory 101 memory 102 CPU

Claims (32)

  1. 　トリガリングメッセージにより、端末をトリガリングする無線通信システムであって、
    　トリガリングメッセージの受信履歴を保持する受信履歴メモリと、
    　前記受信履歴に基づいて、前記受信したトリガリングメッセージを処理する確率を算出し、前記確率に基づいて、前記受信したトリガリングメッセージの一部を処理するトリガリングメッセージ処理部と
    を有する通信システム。     A wireless communication system for triggering a terminal by a triggering message,
    A reception history memory that holds the reception history of triggering messages;
    A communication system comprising: a triggering message processing unit that calculates a probability of processing the received triggering message based on the reception history, and processes a part of the received triggering message based on the probability.
  2. 　前記トリガリングメッセージ処理部は、受信したトリガリングメッセージを転送又は破棄する
    請求項１に記載の通信システム。     The communication system according to claim 1, wherein the triggering message processing unit transfers or discards the received triggering message.
  3. 　前記トリガリングメッセージ処理部は、トリガリングメッセージの受信間隔が短いほど、トリガリングメッセージを破棄する確率が高くなるように算出する
    請求項１又は請求項２に記載の通信システム。     The communication system according to claim 1, wherein the triggering message processing unit calculates the probability that the triggering message is discarded as the reception interval of the triggering message is shorter.
  4. 　前記トリガリングメッセージ処理部は、トリガリングメッセージの受信間隔が、予め定められた値を下回る場合、前記確率に基づいてトリガリングメッセージを破棄する
    請求項１から請求項３のいずれかに記載の通信システム。     The communication according to any one of claims 1 to 3, wherein the triggering message processing unit discards the triggering message based on the probability when a reception interval of the triggering message is less than a predetermined value. system.
  5. 　前記トリガリングメッセージ処理部は、受信したトリガリングメッセージの受信時刻と前記受信したトリガリングメッセージのひとつ前に受信したトリガリングメッセージの受信時刻との差分時間と、予め定めた基準時間との比の関数に基づく確率で、トリガリングメッセージを破棄する
    請求項１から請求項４のいずれかに記載の通信システム。     The triggering message processing unit has a ratio of a difference time between a reception time of the received triggering message and a reception time of the triggering message received immediately before the received triggering message, and a predetermined reference time. The communication system according to any one of claims 1 to 4, wherein the triggering message is discarded with a probability based on a function.
  6. 　前記トリガリングメッセージ処理部は、受信したトリガリングメッセージの受信時刻と前記受信したトリガリングメッセージのひとつ前に受信したトリガリングメッセージの受信時刻との差分時間が、予め定めた基準時間を下回る場合、前記差分時間と前記予め定めた基準時間との比の関数に基づく確率で、トリガリングメッセージの転送を行う
    請求項１から請求項４のいずれかに記載の通信システム。     When the difference time between the reception time of the received triggering message and the reception time of the triggering message received immediately before the received triggering message is less than a predetermined reference time, the triggering message processing unit, The communication system according to any one of claims 1 to 4, wherein a triggering message is transferred with a probability based on a function of a ratio between the difference time and the predetermined reference time.
  7. 　前記トリガリングメッセージ処理部は、トリガリングメッセージに含まれる端末の外部識別子又はMSISDN番号、サーバ識別子、トリガリング参照番号、有効期間、優先度、アプリケーション・ポート番号のいずれかを加味して、前記確率を算出する
    請求項１から請求項６のいずれかに記載の通信システム。     The triggering message processing unit includes the terminal's external identifier or MSISDN number, server identifier, triggering reference number, validity period, priority, application port number included in the triggering message, and the probability. The communication system according to any one of claims 1 to 6, which calculates
  8. 　MTCサーバ(SCS: Service Capability Server)、又は、MTC-IWF(MTC-Interworking Function)が、前記受信履歴メモリと、前記トリガリングメッセージ処理部とを有する
    請求項１から請求項７のいずれかに記載の通信システム。     8. An MTC server (SCS: Service Capability Server) or an MTC-IWF (MTC-Interworking Function) includes the reception history memory and the triggering message processing unit. Communication system.
  9. 　端末をトリガリングするトリガリングメッセージを受信し、前記端末に送信する通信装置であって、
    　トリガリングメッセージの受信履歴を保持する受信履歴メモリと、
    　前記受信履歴に基づいて、前記受信したトリガリングメッセージを処理する確率を算出し、前記確率に基づいて、トリガリングメッセージを処理するトリガリングメッセージ処理部と
    を有する通信装置。     A communication device that receives a triggering message for triggering a terminal and transmits the message to the terminal,
    A reception history memory that holds the reception history of triggering messages;
    A communication apparatus comprising: a triggering message processing unit that calculates a probability of processing the received triggering message based on the reception history and processes the triggering message based on the probability.
  10. 　前記トリガリングメッセージ処理部は、受信したトリガリングメッセージを転送又は破棄する
    請求項９に記載の通信装置。     The communication device according to claim 9, wherein the triggering message processing unit transfers or discards the received triggering message.
  11. 　前記トリガリングメッセージ処理部は、トリガリングメッセージの受信間隔が短いほど、トリガリングメッセージを破棄する確率が高くなるように算出する
    請求項９又は請求項１０に記載の通信装置。     The communication device according to claim 9 or 10, wherein the triggering message processing unit calculates the probability that the triggering message is discarded as the reception interval of the triggering message is shorter.
  12. 　前記トリガリングメッセージ処理部は、トリガリングメッセージの受信間隔が、予め定められた値を下回る場合、前記確率に基づいてトリガリングメッセージを破棄する
    請求項９から請求項１１のいずれかに記載の通信装置。     The communication according to any one of claims 9 to 11, wherein the triggering message processing unit discards the triggering message based on the probability when a reception interval of the triggering message is less than a predetermined value. apparatus.
  13. 　前記トリガリングメッセージ処理部は、受信したトリガリングメッセージの受信時刻と前記受信したトリガリングメッセージのひとつ前に受信したトリガリングメッセージの受信時刻との差分時間と、予め定めた基準時間との比の関数に基づく確率で、トリガリングメッセージを破棄する
    請求項９から請求項１２のいずれかに記載の通信装置。     The triggering message processing unit has a ratio of a difference time between a reception time of the received triggering message and a reception time of the triggering message received immediately before the received triggering message, and a predetermined reference time. The communication apparatus according to claim 9, wherein the triggering message is discarded with a probability based on a function.
  14. 　前記トリガリングメッセージ処理部は、受信したトリガリングメッセージの受信時刻と前記受信したトリガリングメッセージのひとつ前に受信したトリガリングメッセージの受信時刻との差分時間が、予め定めた基準時間を下回る場合、前記差分時間と前記予め定めた基準時間との比の関数に基づく確率で、トリガリングメッセージの転送を行う
    請求項９から請求項１２のいずれかに記載の通信装置。     When the difference time between the reception time of the received triggering message and the reception time of the triggering message received immediately before the received triggering message is less than a predetermined reference time, the triggering message processing unit, The communication device according to any one of claims 9 to 12, wherein a triggering message is transferred with a probability based on a function of a ratio between the difference time and the predetermined reference time.
  15. 　前記トリガリングメッセージ処理部は、トリガリングメッセージに含まれる端末の外部識別子又はMSISDN番号、サーバ識別子、トリガリング参照番号、有効期間、優先度、アプリケーション・ポート番号のいずれかを加味して、前記確率を算出する
    請求項９から請求項１４のいずれかに記載の通信装置。     The triggering message processing unit includes the terminal's external identifier or MSISDN number, server identifier, triggering reference number, validity period, priority, application port number included in the triggering message, and the probability. The communication device according to claim 9, wherein the communication device is calculated.
  16. 　前記通信装置が、MTCサーバ(SCS: Service Capability Server)、又は、MTC-IWF(MTC-Interworking Function)である
    請求項９から請求項１５のいずれかに記載の通信装置。     The communication apparatus according to any one of claims 9 to 15, wherein the communication apparatus is an MTC server (SCS: Service Capability Server) or an MTC-IWF (MTC-Interworking Function).
  17. 　トリガリングメッセージにより、端末をトリガリングする無線通信方法であって、
    　トリガリングメッセージの受信履歴を保持し、
    　前記受信履歴に基づいて、前記受信したトリガリングメッセージを処理する確率を算出し、前記確率に基づいて、トリガリングメッセージを処理する
    通信方法。     A wireless communication method for triggering a terminal by a triggering message,
    Holds the reception history of triggering messages,
    A communication method for calculating a probability of processing the received triggering message based on the reception history and processing the triggering message based on the probability.
  18. 　前記処理は、前記受信したトリガリングメッセージを転送又は破棄である
    請求項１８に記載の通信方法。     The communication method according to claim 18, wherein the process is transferring or discarding the received triggering message.
  19. 　トリガリングメッセージの受信間隔が短いほど、トリガリングメッセージを破棄する確率が高くなるように算出する
    請求項１７又は請求項１８に記載の通信方法。     The communication method according to claim 17 or 18, wherein calculation is performed such that the probability of discarding the triggering message increases as the reception interval of the triggering message is shorter.
  20. 　トリガリングメッセージの受信間隔が、予め定められた値を下回る場合、前記確率に基づいてトリガリングメッセージを破棄する
    請求項１７から請求項１９のいずれかに記載の通信方法。     The communication method according to any one of claims 17 to 19, wherein when the reception interval of the triggering message is less than a predetermined value, the triggering message is discarded based on the probability.
  21. 　受信したトリガリングメッセージの受信時刻と前記受信したトリガリングメッセージのひとつ前に受信したトリガリングメッセージの受信時刻との差分時間と、予め定めた基準時間との比の関数に基づく確率で、トリガリングメッセージを破棄する
    請求項１７から請求項２０のいずれかに記載の通信方法。     Triggering is performed with a probability based on a function of a ratio between a difference time between the reception time of the received triggering message and the reception time of the triggering message received immediately before the received triggering message and a predetermined reference time. The communication method according to any one of claims 17 to 20, wherein the message is discarded.
  22. 　受信したトリガリングメッセージの受信時刻と前記受信したトリガリングメッセージのひとつ前に受信したトリガリングメッセージの受信時刻との差分時間が、予め定めた基準時間を下回る場合、前記差分時間と前記予め定めた基準時間との比の関数に基づく確率で、トリガリングメッセージの転送を行う
    請求項１７から請求項２１のいずれかに記載の通信方法。     When the difference time between the reception time of the received triggering message and the reception time of the triggering message received immediately before the received triggering message is less than a predetermined reference time, the difference time and the predetermined time The communication method according to any one of claims 17 to 21, wherein the triggering message is transferred with a probability based on a function of a ratio to a reference time.
  23. 　トリガリングメッセージに含まれる端末の外部識別子又はMSISDN番号、サーバ識別子、トリガリング参照番号、有効期間、優先度、アプリケーション・ポート番号のいずれかを加味して、前記確率を算出する
    請求項１７から請求項２２のいずれかに記載の通信方法。     18. The probability is calculated from any one of an external identifier or MSISDN number of a terminal included in a triggering message, a server identifier, a triggering reference number, a validity period, a priority, and an application port number. Item 23. The communication method according to any one of Items 22.
  24. 　MTCサーバ(SCS: Service Capability Server)、又は、MTC-IWF(MTC-Interworking Function)が、
    　トリガリングメッセージの受信履歴を保持し、
    　前記受信履歴に基づいて、前記受信したトリガリングメッセージを処理する確率を算出し、前記確率に基づいて、トリガリングメッセージを処理する
    請求項１７から請求項２３のいずれかに記載の通信方法。     MTC server (SCS: Service Capability Server) or MTC-IWF (MTC-Interworking Function)
    Holds the reception history of triggering messages,
    The communication method according to any one of claims 17 to 23, wherein a probability of processing the received triggering message is calculated based on the reception history, and the triggering message is processed based on the probability.
  25. 　端末をトリガリングするトリガリングメッセージを受信し、前記端末に送信するプログラムであって、
    　受信履歴メモリに保持されているトリガリングメッセージの受信履歴に基づいて、前記受信したトリガリングメッセージを処理する確率を算出し、前記確率に基づいて、トリガリングメッセージを処理するトリガリングメッセージ処理を
    通信装置のプロセッサに実行させるプログラム。     A program for receiving a triggering message for triggering a terminal and transmitting the message to the terminal,
    Calculates the probability of processing the received triggering message based on the reception history of the triggering message held in the reception history memory, and communicates the triggering message processing for processing the triggering message based on the probability. A program to be executed by the processor of the device.
  26. 　前記トリガリングメッセージ処理は、受信したトリガリングメッセージを転送又は破棄する
    請求項２５に記載のプログラム。     The program according to claim 25, wherein the triggering message processing transfers or discards the received triggering message.
  27. 　前記トリガリングメッセージ処理は、トリガリングメッセージの受信間隔が短いほど、トリガリングメッセージを破棄する確率が高くなるように算出する
    請求項２５又は請求項２６に記載のプログラム。     27. The program according to claim 25 or claim 26, wherein the triggering message processing is calculated such that the probability that the triggering message is discarded increases as the reception interval of the triggering message is shorter.
  28. 　前記トリガリングメッセージ処理は、トリガリングメッセージの受信間隔が、予め定められた値を下回る場合、前記確率に基づいてトリガリングメッセージを破棄する
    請求項２５から請求項２７のいずれかに記載のプログラム。     28. The program according to claim 25, wherein the triggering message processing discards the triggering message based on the probability when a reception interval of the triggering message is less than a predetermined value.
  29. 　前記トリガリングメッセージ処理は、受信したトリガリングメッセージの受信時刻と前記受信したトリガリングメッセージのひとつ前に受信したトリガリングメッセージの受信時刻との差分時間と、予め定めた基準時間との比の関数に基づく確率で、トリガリングメッセージを破棄する
    請求項２５から請求項２８のいずれかに記載のプログラム。     The triggering message processing is a function of a ratio of a difference time between a reception time of the received triggering message and a reception time of the triggering message received immediately before the received triggering message and a predetermined reference time. The program according to any one of claims 25 to 28, wherein the triggering message is discarded with a probability based on.
  30. 　前記トリガリングメッセージ処理は、受信したトリガリングメッセージの受信時刻と前記受信したトリガリングメッセージのひとつ前に受信したトリガリングメッセージの受信時刻との差分時間が、予め定めた基準時間を下回る場合、前記差分時間と前記予め定めた基準時間との比の関数に基づく確率で、トリガリングメッセージの転送を行う
    請求項２５から請求項２８のいずれかに記載のプログラム。     The triggering message processing is performed when the difference time between the reception time of the received triggering message and the reception time of the triggering message received immediately before the received triggering message is lower than a predetermined reference time, The program according to any one of claims 25 to 28, wherein the triggering message is transferred with a probability based on a function of a ratio between the difference time and the predetermined reference time.
  31. 　前記トリガリングメッセージ処理は、トリガリングメッセージに含まれる端末の外部識別子又はMSISDN番号、サーバ識別子、トリガリング参照番号、有効期間、優先度、アプリケーション・ポート番号のいずれかを加味して、前記確率を算出する
    請求項２５から請求項３０のいずれかに記載のプログラム。     In the triggering message processing, the probability is calculated by taking into account any of an external identifier or MSISDN number of a terminal included in the triggering message, a server identifier, a triggering reference number, a validity period, a priority, and an application port number. The program according to any one of claims 25 to 30, wherein the program is calculated.
  32. 　前記通信装置が、MTCサーバ(SCS: Service Capability Server)、又は、MTC-IWF(MTC-Interworking Function)である
    請求項２５から請求項３１のいずれかに記載のプログラム。     32. The program according to claim 25, wherein the communication device is an MTC server (SCS: Service Capability Server) or an MTC-IWF (MTC-Interworking Function).
PCT/JP2016/072235 2015-08-05 2016-07-28 Communications system, communications device, communications method, and program WO2017022645A1 (en)

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